diff --git a/config.py b/config.py
index c942a9a..58790d8 100644
--- a/config.py
+++ b/config.py
@@ -45,6 +45,10 @@ class Config:
         # 文档格式配置
         self.line_spacing = 1.5
         self.title_levels = 6  # 支持的最大标题层级
+        
+        # 排版样式配置
+        self.current_style = "爆款文章风格"  # 当前选中的样式
+        self.use_custom_style = False  # 是否使用自定义样式
 
     def load_from_file(self, file_path: str) -> bool:
         """
@@ -97,6 +101,8 @@ class Config:
                 section = config_parser['DocumentFormat']
                 self.line_spacing = section.getfloat('line_spacing', self.line_spacing)
                 self.title_levels = section.getint('title_levels', self.title_levels)
+                self.current_style = section.get('current_style', self.current_style)
+                self.use_custom_style = section.getboolean('use_custom_style', self.use_custom_style)
 
             return True
             
@@ -149,7 +155,9 @@ class Config:
             # 保存文档格式配置
             config_parser['DocumentFormat'] = {
                 'line_spacing': str(self.line_spacing),
-                'title_levels': str(self.title_levels)
+                'title_levels': str(self.title_levels),
+                'current_style': self.current_style,
+                'use_custom_style': str(self.use_custom_style)
             }
 
             # 确保目录存在
@@ -197,7 +205,9 @@ class Config:
             },
             'document_format': {
                 'line_spacing': self.line_spacing,
-                'title_levels': self.title_levels
+                'title_levels': self.title_levels,
+                'current_style': self.current_style,
+                'use_custom_style': self.use_custom_style
             }
         }
 
@@ -242,6 +252,8 @@ class Config:
             df = config_dict['document_format']
             self.line_spacing = df.get('line_spacing', self.line_spacing)
             self.title_levels = df.get('title_levels', self.title_levels)
+            self.current_style = df.get('current_style', self.current_style)
+            self.use_custom_style = df.get('use_custom_style', self.use_custom_style)
 
     def reset_to_defaults(self) -> None:
         """重置所有配置为默认值"""
diff --git a/docx_generator.py b/docx_generator.py
index 3cb072c..24f4c15 100644
--- a/docx_generator.py
+++ b/docx_generator.py
@@ -8,6 +8,7 @@ import os
 import re
 from typing import List, Dict, Any, Callable, Optional
 from docx import Document
+from docx.document import Document as DocxDocument
 from docx.shared import Inches, Pt, RGBColor
 from docx.enum.text import WD_ALIGN_PARAGRAPH
 from docx.enum.style import WD_STYLE_TYPE
@@ -16,6 +17,7 @@ from config import config
 from text_processor import text_processor
 from image_processor import ImageProcessor
 from markdown_parser import MarkdownParser
+from style_manager import style_manager
 
 
 # 免责声明文本
@@ -28,6 +30,7 @@ class DocxGenerator:
     def __init__(self):
         """初始化DOCX生成器"""
         self.temp_files = []  # 跟踪临时文件以便清理
+        self.current_document_style = None  # 当前使用的文档样式
 
     def generate(self, sections: List[Dict[str, Any]], image_files: List[str], 
                  output_path: str, progress_callback: Optional[Callable] = None) -> bool:
@@ -81,7 +84,7 @@ class DocxGenerator:
             # 清理临时文件
             self._cleanup_temp_files()
 
-    def _setup_document_styles(self, doc: Document) -> None:
+    def _setup_document_styles(self, doc) -> None:
         """
         设置文档样式
         
@@ -89,19 +92,19 @@ class DocxGenerator:
             doc: DOCX文档对象
         """
         try:
-            # 设置默认字体和行距
-            styles = doc.styles
-            
-            # 设置正文样式
-            if 'Normal' in styles:
-                normal_style = styles['Normal']
-                if config.line_spacing > 0:
-                    normal_style.paragraph_format.line_spacing = config.line_spacing
+            # 获取当前选中的样式
+            current_style = style_manager.get_style(config.current_style)
+            if not current_style:
+                print(f"警告: 找不到样式 '{config.current_style}'，使用默认样式")
+                return
+                
+            self.current_document_style = current_style
+            print(f"应用文档样式: {current_style.name}")
                     
         except Exception as e:
             print(f"设置文档样式时出错: {e}")
 
-    def _add_section_to_doc(self, doc: Document, section: Dict[str, Any], 
+    def _add_section_to_doc(self, doc: DocxDocument, section: Dict[str, Any], 
                            image_files: List[str], image_index: int, image_count: int, 
                            output_path: str) -> int:
         """
@@ -122,14 +125,69 @@ class DocxGenerator:
         if section['level'] > 0 and section['level'] <= config.title_levels:
             heading_text = text_processor.process_text_content(section['content'])
             para = doc.add_heading(level=section['level'])
+            # 清空默认内容，应用自定义样式
+            para.clear()
+            run = para.add_run(heading_text)
+            
+            # 应用标题样式
+            if hasattr(self, 'current_document_style') and self.current_document_style and self.current_document_style.heading_styles:
+                if section['level'] in self.current_document_style.heading_styles:
+                    heading_style = self.current_document_style.heading_styles[section['level']]
+                    if heading_style.font:
+                        run.font.name = heading_style.font.name
+                        run.font.size = Pt(heading_style.font.size)
+                        run.font.bold = heading_style.font.bold
+                        run.font.italic = heading_style.font.italic
+                        if heading_style.font.color != "#000000":
+                            run.font.color.rgb = RGBColor.from_string(heading_style.font.color.replace('#', ''))
+                    
+                    if heading_style.paragraph:
+                        para_style = heading_style.paragraph
+                        if para_style.line_spacing > 0:
+                            para.paragraph_format.line_spacing = para_style.line_spacing
+                        if para_style.space_before > 0:
+                            para.paragraph_format.space_before = Pt(para_style.space_before)
+                        if para_style.space_after > 0:
+                            para.paragraph_format.space_after = Pt(para_style.space_after)
+                        if para_style.first_line_indent > 0:
+                            para.paragraph_format.first_line_indent = Pt(para_style.first_line_indent * 12)
+                        
+                        # 设置对齐方式
+                        if para_style.alignment == "center":
+                            para.alignment = WD_ALIGN_PARAGRAPH.CENTER
+                        elif para_style.alignment == "right":
+                            para.alignment = WD_ALIGN_PARAGRAPH.RIGHT
+                        elif para_style.alignment == "justify":
+                            para.alignment = WD_ALIGN_PARAGRAPH.JUSTIFY
+                        else:
+                            para.alignment = WD_ALIGN_PARAGRAPH.LEFT
+            else:
+                # 默认样式
+                run.font.size = Pt(18 - section['level'] * 2 if section['level'] <= 6 else 10)
+                run.font.bold = True
+            
             self._apply_inline_formatting(para, heading_text)
         elif section['content'] != '前置内容':
             heading_text = text_processor.process_text_content(section['content'])
             para = doc.add_paragraph()
             run = para.add_run(heading_text)
-            run.font.size = Pt(14)
-            run.font.bold = True
-            para.space_after = Pt(12)
+            
+            # 应用样式设置
+            if hasattr(self, 'current_document_style') and self.current_document_style and self.current_document_style.heading_styles:
+                if section['level'] in self.current_document_style.heading_styles:
+                    heading_style = self.current_document_style.heading_styles[section['level']]
+                    if heading_style.font:
+                        run.font.name = heading_style.font.name
+                        run.font.size = Pt(heading_style.font.size)
+                        run.font.bold = heading_style.font.bold
+                        run.font.italic = heading_style.font.italic
+                        if heading_style.font.color != "#000000":
+                            run.font.color.rgb = RGBColor.from_string(heading_style.font.color.replace('#', ''))
+            else:
+                run.font.size = Pt(14)
+                run.font.bold = True
+                
+            para.paragraph_format.space_after = Pt(12)
 
         # 处理章节中的元素
         elements = section.get('elements', [])
@@ -150,7 +208,7 @@ class DocxGenerator:
 
         return image_index
 
-    def _add_element_to_doc(self, doc: Document, element: Dict[str, Any]) -> None:
+    def _add_element_to_doc(self, doc: DocxDocument, element: Dict[str, Any]) -> None:
         """
         将解析的元素添加到文档中
         
@@ -167,14 +225,50 @@ class DocxGenerator:
         elif element_type == 'unordered_list':
             para = doc.add_paragraph(style='List Bullet')
             self._apply_inline_formatting(para, content)
+            # 应用列表样式
+            if hasattr(self, 'current_document_style') and self.current_document_style and self.current_document_style.unordered_list:
+                list_style = self.current_document_style.unordered_list
+                if list_style.paragraph:
+                    if list_style.paragraph.space_before > 0:
+                        para.paragraph_format.space_before = Pt(list_style.paragraph.space_before)
+                    if list_style.paragraph.space_after > 0:
+                        para.paragraph_format.space_after = Pt(list_style.paragraph.space_after)
 
         elif element_type == 'ordered_list':
             para = doc.add_paragraph(style='List Number')
             self._apply_inline_formatting(para, content)
+            # 应用列表样式
+            if hasattr(self, 'current_document_style') and self.current_document_style and self.current_document_style.ordered_list:
+                list_style = self.current_document_style.ordered_list
+                if list_style.paragraph:
+                    if list_style.paragraph.space_before > 0:
+                        para.paragraph_format.space_before = Pt(list_style.paragraph.space_before)
+                    if list_style.paragraph.space_after > 0:
+                        para.paragraph_format.space_after = Pt(list_style.paragraph.space_after)
 
         elif element_type == 'blockquote':
             para = doc.add_paragraph(style='Quote')
             self._apply_inline_formatting(para, content)
+            # 应用引用样式
+            if hasattr(self, 'current_document_style') and self.current_document_style and self.current_document_style.quote_block:
+                quote_style = self.current_document_style.quote_block
+                if quote_style.paragraph:
+                    if quote_style.paragraph.line_spacing > 0:
+                        para.paragraph_format.line_spacing = quote_style.paragraph.line_spacing
+                    if quote_style.paragraph.space_before > 0:
+                        para.paragraph_format.space_before = Pt(quote_style.paragraph.space_before)
+                    if quote_style.paragraph.space_after > 0:
+                        para.paragraph_format.space_after = Pt(quote_style.paragraph.space_after)
+                    if quote_style.paragraph.first_line_indent > 0:
+                        para.paragraph_format.first_line_indent = Pt(quote_style.paragraph.first_line_indent * 12)
+                    
+                    # 设置对齐方式
+                    if quote_style.paragraph.alignment == "center":
+                        para.alignment = WD_ALIGN_PARAGRAPH.CENTER
+                    elif quote_style.paragraph.alignment == "right":
+                        para.alignment = WD_ALIGN_PARAGRAPH.RIGHT
+                    elif quote_style.paragraph.alignment == "justify":
+                        para.alignment = WD_ALIGN_PARAGRAPH.JUSTIFY
 
         elif element_type == 'code_block':
             self._add_code_block(doc, element.get('content', ''), element.get('language', ''))
@@ -188,7 +282,7 @@ class DocxGenerator:
         elif element_type == 'empty':
             doc.add_paragraph()
 
-    def _add_formatted_paragraph(self, doc: Document, content: str) -> None:
+    def _add_formatted_paragraph(self, doc: DocxDocument, content: str) -> None:
         """
         添加带格式的段落
         
@@ -203,7 +297,29 @@ class DocxGenerator:
         para = doc.add_paragraph()
         self._apply_inline_formatting(para, content)
 
-        if config.line_spacing > 0:
+        # 应用样式中的段落格式
+        if hasattr(self, 'current_document_style') and self.current_document_style:
+            if self.current_document_style.body_paragraph:
+                body_para = self.current_document_style.body_paragraph
+                if body_para.line_spacing > 0:
+                    para.paragraph_format.line_spacing = body_para.line_spacing
+                if body_para.space_before > 0:
+                    para.paragraph_format.space_before = Pt(body_para.space_before)
+                if body_para.space_after > 0:
+                    para.paragraph_format.space_after = Pt(body_para.space_after)
+                if body_para.first_line_indent > 0:
+                    para.paragraph_format.first_line_indent = Pt(body_para.first_line_indent * 12)  # 字符转磅
+                
+                # 设置对齐方式
+                if body_para.alignment == "center":
+                    para.alignment = WD_ALIGN_PARAGRAPH.CENTER
+                elif body_para.alignment == "right":
+                    para.alignment = WD_ALIGN_PARAGRAPH.RIGHT
+                elif body_para.alignment == "justify":
+                    para.alignment = WD_ALIGN_PARAGRAPH.JUSTIFY
+                else:
+                    para.alignment = WD_ALIGN_PARAGRAPH.LEFT
+        elif config.line_spacing > 0:
             para.paragraph_format.line_spacing = config.line_spacing
 
     def _apply_inline_formatting(self, paragraph, text: str) -> None:
@@ -222,7 +338,8 @@ class DocxGenerator:
 
         # 如果没有格式，直接添加文本
         if not formatting:
-            paragraph.add_run(processed_text)
+            run = paragraph.add_run(processed_text)
+            self._apply_body_font_style(run)
             return
 
         current_pos = 0
@@ -230,34 +347,48 @@ class DocxGenerator:
         for fmt in formatting:
             # 添加格式前的普通文本
             if fmt['start'] > current_pos:
-                paragraph.add_run(processed_text[current_pos:fmt['start']])
+                run = paragraph.add_run(processed_text[current_pos:fmt['start']])
+                self._apply_body_font_style(run)
 
             # 创建格式化的run
             if fmt['type'] == 'bold':
                 clean_text = re.sub(r'\*\*(.+?)\*\*|__(.+?)__', r'\1\2', processed_text[fmt['start']:fmt['end']])
                 run = paragraph.add_run(clean_text)
+                self._apply_body_font_style(run)
                 run.bold = True
 
             elif fmt['type'] == 'italic':
                 clean_text = re.sub(r'(?<!\*)\*(?!\*)(.+?)(?<!\*)\*(?!\*)|_(.+?)_', r'\1\2',
                                     processed_text[fmt['start']:fmt['end']])
                 run = paragraph.add_run(clean_text)
+                self._apply_body_font_style(run)
                 run.italic = True
 
             elif fmt['type'] == 'code':
                 clean_text = re.sub(r'`([^`]+)`', r'\1', processed_text[fmt['start']:fmt['end']])
                 run = paragraph.add_run(clean_text)
-                run.font.name = 'Courier New'
-                run.font.size = Pt(10)
+                # 代码样式优先使用样式中的设置
+                if hasattr(self, 'current_document_style') and self.current_document_style and self.current_document_style.code_block:
+                    code_style = self.current_document_style.code_block
+                    if code_style.font:
+                        run.font.name = code_style.font.name
+                        run.font.size = Pt(code_style.font.size)
+                        if code_style.font.color != "#000000":
+                            run.font.color.rgb = RGBColor.from_string(code_style.font.color.replace('#', ''))
+                else:
+                    run.font.name = 'Courier New'
+                    run.font.size = Pt(10)
 
             elif fmt['type'] == 'strikethrough':
                 clean_text = re.sub(r'~~(.+?)~~', r'\1', processed_text[fmt['start']:fmt['end']])
                 run = paragraph.add_run(clean_text)
+                self._apply_body_font_style(run)
                 run.font.strike = True
 
             elif fmt['type'] == 'link':
                 # 对于链接，只显示链接文本
                 run = paragraph.add_run(fmt['text'])
+                self._apply_body_font_style(run)
                 run.font.color.rgb = RGBColor(0, 0, 255)  # 蓝色
                 run.underline = True
 
@@ -265,9 +396,26 @@ class DocxGenerator:
 
         # 添加剩余的普通文本
         if current_pos < len(processed_text):
-            paragraph.add_run(processed_text[current_pos:])
+            run = paragraph.add_run(processed_text[current_pos:])
+            self._apply_body_font_style(run)
 
-    def _add_code_block(self, doc: Document, content: str, language: str) -> None:
+    def _apply_body_font_style(self, run) -> None:
+        """
+        应用正文字体样式到run
+        
+        Args:
+            run: DOCX run对象
+        """
+        if hasattr(self, 'current_document_style') and self.current_document_style and self.current_document_style.body_font:
+            body_font = self.current_document_style.body_font
+            run.font.name = body_font.name
+            run.font.size = Pt(body_font.size)
+            run.font.bold = body_font.bold
+            run.font.italic = body_font.italic
+            if body_font.color != "#000000":
+                run.font.color.rgb = RGBColor.from_string(body_font.color.replace('#', ''))
+
+    def _add_code_block(self, doc: DocxDocument, content: str, language: str) -> None:
         """
         添加代码块
         
@@ -278,17 +426,32 @@ class DocxGenerator:
         """
         para = doc.add_paragraph(style='No Spacing')
         run = para.add_run(content)
-        run.font.name = 'Courier New'
-        run.font.size = Pt(10)
         
-        # 设置背景色（如果支持）
-        try:
+        # 应用代码块样式
+        if hasattr(self, 'current_document_style') and self.current_document_style and self.current_document_style.code_block:
+            code_style = self.current_document_style.code_block
+            if code_style.font:
+                run.font.name = code_style.font.name
+                run.font.size = Pt(code_style.font.size)
+                run.font.bold = code_style.font.bold
+                run.font.italic = code_style.font.italic
+                if code_style.font.color != "#000000":
+                    run.font.color.rgb = RGBColor.from_string(code_style.font.color.replace('#', ''))
+            
+            if code_style.paragraph:
+                para_style = code_style.paragraph
+                if para_style.space_before > 0:
+                    para.paragraph_format.space_before = Pt(para_style.space_before)
+                if para_style.space_after > 0:
+                    para.paragraph_format.space_after = Pt(para_style.space_after)
+        else:
+            # 默认样式
+            run.font.name = 'Courier New'
+            run.font.size = Pt(10)
             para.paragraph_format.space_before = Pt(6)
             para.paragraph_format.space_after = Pt(6)
-        except:
-            pass
 
-    def _add_table_to_doc(self, doc: Document, rows: List[List[str]]) -> None:
+    def _add_table_to_doc(self, doc: DocxDocument, rows: List[List[str]]) -> None:
         """
         添加表格到文档
         
@@ -307,9 +470,29 @@ class DocxGenerator:
             for j, cell_data in enumerate(row_data):
                 if j < len(row_cells):
                     processed_text = text_processor.process_text_content(cell_data)
-                    row_cells[j].text = processed_text
+                    cell_para = row_cells[j].paragraphs[0]
+                    cell_para.clear()
+                    run = cell_para.add_run(processed_text)
+                    
+                    # 应用表格样式
+                    if hasattr(self, 'current_document_style') and self.current_document_style and self.current_document_style.table_style:
+                        table_style = self.current_document_style.table_style
+                        if table_style.font:
+                            run.font.name = table_style.font.name
+                            run.font.size = Pt(table_style.font.size)
+                            run.font.bold = table_style.font.bold
+                            run.font.italic = table_style.font.italic
+                            if table_style.font.color != "#000000":
+                                run.font.color.rgb = RGBColor.from_string(table_style.font.color.replace('#', ''))
+                        
+                        if table_style.paragraph:
+                            para_style = table_style.paragraph
+                            if para_style.space_before > 0:
+                                cell_para.paragraph_format.space_before = Pt(para_style.space_before)
+                            if para_style.space_after > 0:
+                                cell_para.paragraph_format.space_after = Pt(para_style.space_after)
 
-    def _add_horizontal_rule(self, doc: Document) -> None:
+    def _add_horizontal_rule(self, doc: DocxDocument) -> None:
         """
         在文档中添加横线
         
@@ -322,7 +505,7 @@ class DocxGenerator:
         run.text = " " * 100  # 足够长的下划线作为横线
         para.alignment = WD_ALIGN_PARAGRAPH.CENTER
 
-    def _insert_section_image(self, doc: Document, image_files: List[str], 
+    def _insert_section_image(self, doc: DocxDocument, image_files: List[str], 
                              image_index: int, image_count: int, output_path: str) -> int:
         """
         为章节插入图片
@@ -358,7 +541,7 @@ class DocxGenerator:
 
         return image_index
 
-    def _insert_image(self, doc: Document, image_path: str, output_path: str) -> None:
+    def _insert_image(self, doc: DocxDocument, image_path: str, output_path: str) -> None:
         """
         插入图片到文档
         
@@ -392,7 +575,7 @@ class DocxGenerator:
         except Exception as e:
             raise Exception(f"插入图片失败: {str(e)}")
 
-    def _add_disclaimer(self, doc: Document) -> None:
+    def _add_disclaimer(self, doc: DocxDocument) -> None:
         """
         添加免责声明
         
diff --git a/gui_config.py b/gui_config.py
index c2b1ee2..229755b 100644
--- a/gui_config.py
+++ b/gui_config.py
@@ -7,6 +7,7 @@ GUI配置窗口模块
 import tkinter as tk
 from tkinter import ttk, filedialog, messagebox
 from config import config
+from gui_style_manager import create_style_tab
 
 
 def show_config_window():
@@ -37,10 +38,9 @@ def show_config_window():
     notebook.add(image_frame, text='图片处理')
     _create_image_tab(image_frame)
     
-    # 文档格式选项卅
-    format_frame = ttk.Frame(notebook)
-    notebook.add(format_frame, text='文档格式')
-    _create_format_tab(format_frame)
+    # 文章样式选项卡
+    style_frame = create_style_tab(notebook)
+    notebook.add(style_frame, text='文章样式')
     
     # 底部按钮
     button_frame = ttk.Frame(config_window)
@@ -238,32 +238,6 @@ def _create_image_tab(parent):
     strategy_var.trace('w', lambda *args: setattr(config, 'image_strategy', strategy_var.get()))
 
 
-def _create_format_tab(parent):
-    """创建文档格式选项卡"""
-    # 标题
-    ttk.Label(parent, text='文档格式设置', font=('', 12, 'bold')).pack(anchor='w', padx=10, pady=(10, 5))
-    ttk.Separator(parent, orient='horizontal').pack(fill='x', padx=10, pady=5)
-    
-    # 行间距
-    spacing_frame = ttk.Frame(parent)
-    spacing_frame.pack(fill='x', padx=10, pady=5)
-    ttk.Label(spacing_frame, text='行间距:', width=12).pack(side='left')
-    spacing_var = tk.StringVar(value=str(config.line_spacing))
-    spacing_entry = ttk.Entry(spacing_frame, textvariable=spacing_var, width=8)
-    spacing_entry.pack(side='left')
-    spacing_var.trace('w', lambda *args: _update_line_spacing(spacing_var.get()))
-    
-    # 最大标题层级
-    title_frame = ttk.Frame(parent)
-    title_frame.pack(fill='x', padx=10, pady=5)
-    ttk.Label(title_frame, text='最大标题层级:', width=12).pack(side='left')
-    title_var = tk.StringVar(value=str(config.title_levels))
-    title_combo = ttk.Combobox(title_frame, textvariable=title_var, values=['1', '2', '3', '4', '5', '6'], 
-                              state='readonly', width=8)
-    title_combo.pack(side='left')
-    title_var.trace('w', lambda *args: _update_title_levels(title_var.get()))
-
-
 def _update_image_width(value):
     """更新图片宽度"""
     try:
@@ -272,22 +246,6 @@ def _update_image_width(value):
         pass
 
 
-def _update_line_spacing(value):
-    """更新行间距"""
-    try:
-        config.line_spacing = float(value)
-    except:
-        pass
-
-
-def _update_title_levels(value):
-    """更新标题层级"""
-    try:
-        config.title_levels = int(value)
-    except:
-        pass
-
-
 def _reset_to_default(char_vars):
     """重置为默认值"""
     from config import Config
diff --git a/main.py b/main.py
index 30fa3e0..d282233 100644
--- a/main.py
+++ b/main.py
@@ -193,16 +193,16 @@ class TxtToDocxApp:
         self.progress_bar = ttk.Progressbar(main_frame, variable=self.progress_var, maximum=100)
         
         # 状态栏和按钮区域
-        bottom_frame = ttk.Frame(main_frame)
-        bottom_frame.pack(fill='x', pady=(0, 0))
+        self.bottom_frame = ttk.Frame(main_frame)
+        self.bottom_frame.pack(fill='x', pady=(0, 0))
         
         # 状态文本
         self.status_text = tk.StringVar(value='状态: 就绪')
-        status_label = ttk.Label(bottom_frame, textvariable=self.status_text)
+        status_label = ttk.Label(self.bottom_frame, textvariable=self.status_text)
         status_label.pack(side='left')
         
         # 右侧按钮
-        right_buttons = ttk.Frame(bottom_frame)
+        right_buttons = ttk.Frame(self.bottom_frame)
         right_buttons.pack(side='right')
         
         self.convert_btn = ttk.Button(right_buttons, text='开始批量转换', 
@@ -348,7 +348,8 @@ class TxtToDocxApp:
 
         # 禁用按钮，显示进度条
         self.convert_btn.configure(state='disabled')
-        self.progress_bar.pack(fill='x', padx=10, pady=5, before=self.root.children[list(self.root.children.keys())[-2]])
+        # 将进度条插入到底部框架之前
+        self.progress_bar.pack(fill='x', padx=10, pady=5, before=self.bottom_frame)
         
         # 在线程中执行转换，避免界面卡死
         def run_conversion():