diff --git a/src/main/java/com/aida/seller/module/designer/service/DesignerServiceImpl.java b/src/main/java/com/aida/seller/module/designer/service/DesignerServiceImpl.java
index dbbbb3d..254e0bf 100644
--- a/src/main/java/com/aida/seller/module/designer/service/DesignerServiceImpl.java
+++ b/src/main/java/com/aida/seller/module/designer/service/DesignerServiceImpl.java
@@ -57,8 +57,16 @@ public class DesignerServiceImpl extends ServiceImpl<DesignerMapper, DesignerEnt
         DesignerEntity entity = new DesignerEntity();
         entity.setUserId(UserContext.getUserId());
         entity.setShopName(dto.getShopName());
-        entity.setAvatar(minioUtil.convertToLogicalPath(dto.getAvatar()));
-        entity.setBrandBanner(minioUtil.convertToLogicalPath(dto.getBrandBanner()));
+        entity.setAvatar(
+                dto.getAvatar() != null && !dto.getAvatar().isBlank()
+                        ? minioUtil.convertToLogicalPath(dto.getAvatar())
+                        : null
+        );
+        entity.setBrandBanner(
+                dto.getBrandBanner() != null && !dto.getBrandBanner().isBlank()
+                        ? minioUtil.convertToLogicalPath(dto.getBrandBanner())
+                        : null
+        );
         entity.setOwnerName(dto.getOwnerName());
         entity.setEmail(dto.getEmail());
         entity.setMobile(dto.getMobile());