diff --git a/frontend/web-admin/src/views/OrderCreatePage.vue b/frontend/web-admin/src/views/OrderCreatePage.vue
index ba828d5..2299bb6 100644
--- a/frontend/web-admin/src/views/OrderCreatePage.vue
+++ b/frontend/web-admin/src/views/OrderCreatePage.vue
@@ -243,7 +243,7 @@
               </label>
               <label>
                 <span>数量</span>
-                <input v-model.number="row.quantity" type="number" min="0.01" step="0.01" />
+                <input v-model.number="row.quantity" type="number" min="0.01" step="0.01" @input="calcDemandResult(row)" />
               </label>
             </div>
           </div>
diff --git a/frontend/web-sales/src/views/OrderFormPage.vue b/frontend/web-sales/src/views/OrderFormPage.vue
index 8b7c777..56c26d5 100644
--- a/frontend/web-sales/src/views/OrderFormPage.vue
+++ b/frontend/web-sales/src/views/OrderFormPage.vue
@@ -223,7 +223,7 @@
               </label>
               <label>
                 <span>数量</span>
-                <input v-model.number="row.quantity" type="number" min="0.01" step="0.01" />
+                <input v-model.number="row.quantity" type="number" min="0.01" step="0.01" @input="calcDemandResult(row)" />
               </label>
               <!-- 特殊计价字段 -->
               <label>