diff --git a/eladmin-common/src/main/java/me/zhengjie/utils/FileUtil.java b/eladmin-common/src/main/java/me/zhengjie/utils/FileUtil.java
index 95f6d1dc..b6a04ac1 100644
--- a/eladmin-common/src/main/java/me/zhengjie/utils/FileUtil.java
+++ b/eladmin-common/src/main/java/me/zhengjie/utils/FileUtil.java
@@ -136,7 +136,7 @@ public class FileUtil extends cn.hutool.core.io.FileUtil {
      * @throws Exception
      */
     public static File inputStreamToFile(InputStream ins, String name) throws Exception{
-        File file = new File(System.getProperty("java.io.tmpdir") + name);
+        File file = new File(System.getProperty("java.io.tmpdir") + File.separator + name);
         if (file.exists()) {
             return file;
         }