diff --git a/platform-common/src/main/java/com/lyms/platform/common/utils/StringUtils.java b/platform-common/src/main/java/com/lyms/platform/common/utils/StringUtils.java
index fc3e61b..608d699 100644
--- a/platform-common/src/main/java/com/lyms/platform/common/utils/StringUtils.java
+++ b/platform-common/src/main/java/com/lyms/platform/common/utils/StringUtils.java
@@ -419,7 +419,8 @@ public final class StringUtils {
         if (numCode != null)
         {
             StringBuffer sb = new StringBuffer(String.valueOf(numCode));
-            sb.insert(6,"-");
+            sb.insert(8,"-");
+            return sb.toString();
         }
         return "";
     }