diff --git a/inventory-backend/app/services/inbound/base_service.py b/inventory-backend/app/services/inbound/base_service.py
index c30e6b4..de1ecd7 100644
--- a/inventory-backend/app/services/inbound/base_service.py
+++ b/inventory-backend/app/services/inbound/base_service.py
@@ -671,6 +671,8 @@ class MaterialBaseService:
 
             if 'generalManual' in data:
                 material.manual_link = json.dumps(data['generalManual'])
+            # ★ 仅当 payload 明确携带 generalImage 时才更新图片（含传 [] 表示清空）；
+            #   修改其他字段时不动图片，避免误清空 product_image
             if 'generalImage' in data:
                 new_photo_list = data['generalImage']
                 material.product_image = json.dumps(new_photo_list)
@@ -685,11 +687,11 @@ class MaterialBaseService:
                         material.id,
                         new_photo_list
                     )
-            else:
-                material.product_image = None
-                ImageEmbeddingService.delete_embeddings(
-                    ImageEmbeddingService.MODULE_MATERIAL_BASE, material.id
-                )
+                else:
+                    # 图片被清空([])时，同步清理该物料的图片向量
+                    ImageEmbeddingService.delete_embeddings(
+                        ImageEmbeddingService.MODULE_MATERIAL_BASE, material.id
+                    )
 
             # 【核心修改】：兼容前端传来的布尔值
             if 'referencePrice' in data: