diff --git a/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSource.java
index 10e8015053..726753a29a 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSource.java
@@ -675,6 +675,9 @@ public abstract class DruidAbstractDataSource extends WrapperAdapter implements
     }
 
     public void setMinEvictableIdleTimeMillis(long minEvictableIdleTimeMillis) {
+        if (minEvictableIdleTimeMillis < 1000 * 30) {
+            LOG.error("minEvictableIdleTimeMillis should be greater than 30000");
+        }
         this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
     }