diff --git a/core/src/main/java/tk/mybatis/mapper/util/OGNL.java b/core/src/main/java/tk/mybatis/mapper/util/OGNL.java
index 6100f98a843b20710a5f01af18d3d97b38c21ced..d4ed9df1d852ec2103524dc08a1b0ce181366916 100644
--- a/core/src/main/java/tk/mybatis/mapper/util/OGNL.java
+++ b/core/src/main/java/tk/mybatis/mapper/util/OGNL.java
@@ -114,8 +114,7 @@ public abstract class OGNL {
         if (parameter != null) {
             try {
                 if (parameter instanceof Example) {
-                    List<Example.Criteria> criteriaList = ((Example) parameter).getOredCriteria();
-                    if (criteriaList != null && criteriaList.size() > 0) {
+                    if (hasValidCriteria((Example) parameter)) {
                         return true;
                     }
                 } else {
@@ -250,4 +249,21 @@ public abstract class OGNL {
         return result;
     }
 
+    /**
+     * 检查example是否至少有一个valid的Criteria
+     * @param example
+     * @return
+     */
+    private static boolean hasValidCriteria(Example example) {
+        if (example == null || example.getOredCriteria() == null) {
+            return false;
+        }
+        for (Example.Criteria oredCriteria : example.getOredCriteria()) {
+            if (oredCriteria.isValid()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
 }