diff --git a/src/main/java/org/redkale/source/FilterValue.java b/src/main/java/org/redkale/source/FilterValue.java
index 50d7660f8..3c7bd642f 100644
--- a/src/main/java/org/redkale/source/FilterValue.java
+++ b/src/main/java/org/redkale/source/FilterValue.java
@@ -59,4 +59,8 @@ public class FilterValue implements java.io.Serializable {
         this.destvalue = destvalue;
     }
 
+    @Override
+    public String toString() {
+        return FilterValue.class.getSimpleName() + "[optvalue=" + getOptvalue() + ", express=" + getExpress() + ", destvalue=" + getDestvalue() + "]";
+    }
 }