diff --git a/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java b/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
index 7072ffa8..ba0d3a9e 100644
--- a/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
@@ -968,10 +968,20 @@ public class DesignItemServiceImpl extends ServiceImpl<DesignItemMapper, DesignI
             } else if (Objects.isNull(item.getPartialDesign())
                     || StringUtil.isNullOrEmpty(item.getPartialDesign().getPartialDesignMinioPath())) {
                 if (designType.equals("merge")) {
-                    log.error("merge模式下，必须提供partialDesign");
-                    throw new BusinessException("required.partialDesign");
+                    // 先去数据库进行查找，如果数据库中也是空，则提示需要提供，否则无法生成
+                    DesignItemDetail designItemDetail = designItemDetailService.getById(item.getId());
+                    if (Objects.isNull(designItemDetail)){
+                        log.error("未知designItemDetailId: {}", item.getId());
+                        throw new BusinessException("designItemDetails.not.found");
+                    } else if (StringUtil.isNullOrEmpty(designItemDetail.getPartialDesign())) {
+                        log.error("merge模式下，必须提供partialDesign");
+                        throw new BusinessException("required.partialDesign");
+                    } else {
+                        item.setPartialDesign(new PartialDesignDTO(designItemDetail.getPartialDesign()));
+                    }
+                } else {
+                    item.setPartialDesign(new PartialDesignDTO(null));
                 }
-                item.setPartialDesign(new PartialDesignDTO(null));
             }
         });
     }