diff --git a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/inteceptor/MybatisSqlInterceptor.java b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/inteceptor/MybatisSqlInterceptor.java
index 9547c96..80753b4 100644
--- a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/inteceptor/MybatisSqlInterceptor.java
+++ b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/inteceptor/MybatisSqlInterceptor.java
@@ -134,7 +134,7 @@ public class MybatisSqlInterceptor implements Interceptor {
             }
             else
             {
-                value = "''";
+                value = "null";
             }
         }
         return value;