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 7c7bd54b..a3e680fe 100644
--- a/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
@@ -661,7 +661,7 @@ public class DesignItemServiceImpl extends ServiceImpl<DesignItemMapper, DesignI
                     throw new BusinessException("path.cannot.be.empty");
                 }
                 String sourcePath = item.getPath();
-                String path = sourcePath.substring(sourcePath.indexOf("/") + 1, sourcePath.lastIndexOf("."));
+                String path = sourcePath.substring(sourcePath.lastIndexOf("/") + 1, sourcePath.lastIndexOf("."));
                 // 路径组成：用户id + sketchboard + temp | modified + 原图所在不同桶的原路径
                 if (designSingleIncludeLayersDTO.getIsPreview()) {
                     path = userId + "/sketchboard/temp/" + path;