diff --git a/client/src/main/java/com/vesoft/nebula/client/graph/net/NebulaPool.java b/client/src/main/java/com/vesoft/nebula/client/graph/net/NebulaPool.java
index ec4d419f1..d7fb0daed 100644
--- a/client/src/main/java/com/vesoft/nebula/client/graph/net/NebulaPool.java
+++ b/client/src/main/java/com/vesoft/nebula/client/graph/net/NebulaPool.java
@@ -94,6 +94,10 @@ public boolean init(List<HostAddress> addresses, NebulaPoolConfig config)
         objConfig.setMinIdle(config.getMinConnSize());
         objConfig.setMaxIdle(config.getMaxConnSize());
         objConfig.setMaxTotal(config.getMaxConnSize());
+        objConfig.setTestOnBorrow(true);
+        objConfig.setTestOnReturn(true);
+        objConfig.setTestWhileIdle(true);
+        objConfig.setTestOnCreate(true);
         objConfig.setTimeBetweenEvictionRunsMillis(config.getIntervalIdle() <= 0
             ? BaseObjectPoolConfig.DEFAULT_TIME_BETWEEN_EVICTION_RUNS_MILLIS
             : config.getIntervalIdle());