diff --git a/backend/app/workers/packaging_task.py b/backend/app/workers/packaging_task.py
index 1c3ed08..b95d274 100644
--- a/backend/app/workers/packaging_task.py
+++ b/backend/app/workers/packaging_task.py
@@ -61,12 +61,12 @@ def build_delivery_package(self, package_id: int) -> dict:
             img_bytes = b""
             if ic.url:
                 path = ic.url
-                if os.path.isabs(path):
-                    pass
-                elif path.startswith("/uploads/"):
+                if path.startswith("/uploads/"):
                     path = f"{upload_root}/{path.removeprefix('/uploads/')}"
                 elif path.startswith("uploads/"):
                     path = f"{upload_root}/{path.removeprefix('uploads/')}"
+                elif os.path.isabs(path):
+                    pass
                 try:
                     with open(path, "rb") as f:
                         img_bytes = f.read()
@@ -101,6 +101,8 @@ def build_delivery_package(self, package_id: int) -> dict:
         notes = []
         for idx, (_strategy, slot) in enumerate(groups.items()):
             images_data = [_read_image(slot[k]) for k in sorted(slot)]
+            if not any(img.get("data") for img in images_data):
+                raise ValueError(f"套{_strategy}图片文件读取失败，拒绝生成无图交付包")
             # 配对优先级：①同 strategy 文案精准对齐 ②无同套则按顺序取无套文案
             # ③再兜底用第 idx 条/第 1 条，确保每组图都有文案不漏。
             tc = texts_by_strategy.get(_strategy)