diff --git a/src/main/java/com/aliyun/tea/okhttp/OkHttpClientBuilder.java b/src/main/java/com/aliyun/tea/okhttp/OkHttpClientBuilder.java
index dfdd5d7..0284cbc 100644
--- a/src/main/java/com/aliyun/tea/okhttp/OkHttpClientBuilder.java
+++ b/src/main/java/com/aliyun/tea/okhttp/OkHttpClientBuilder.java
@@ -59,7 +59,11 @@ public OkHttpClientBuilder connectionPool(Map<String, Object> map) {
         } catch (Exception e) {
             maxIdleConnections = 5;
         }
-        ConnectionPool connectionPool = new ConnectionPool(maxIdleConnections, 10000L, TimeUnit.MILLISECONDS);
+        long keepAliveDuration = 10000L;
+        if (map.containsKey("keepAliveDuration") && null != map.get("keepAliveDuration")) {
+            keepAliveDuration = Long.parseLong(String.valueOf(map.get("keepAliveDuration")));
+        }
+        ConnectionPool connectionPool = new ConnectionPool(maxIdleConnections, keepAliveDuration, TimeUnit.MILLISECONDS);
         this.builder.connectionPool(connectionPool);
         return this;
     }
diff --git a/src/test/java/com/aliyun/tea/okhttp/OkHttpClientBuilderTest.java b/src/test/java/com/aliyun/tea/okhttp/OkHttpClientBuilderTest.java
index af440e8..4a8350e 100644
--- a/src/test/java/com/aliyun/tea/okhttp/OkHttpClientBuilderTest.java
+++ b/src/test/java/com/aliyun/tea/okhttp/OkHttpClientBuilderTest.java
@@ -40,6 +40,37 @@ public void connectionPoolTest() {
         map.put("maxIdleConns", 666);
         clientBuilder.connectionPool(map);
         Mockito.verify(clientBuilder, Mockito.times(2)).connectionPool(map);
+
+        map.put("keepAliveDuration", null);
+        clientBuilder.connectionPool(map);
+
+        map.put("keepAliveDuration", "");
+        try {
+            clientBuilder.connectionPool(map);
+            Assert.fail();
+        } catch (NumberFormatException e) {
+            Assert.assertTrue(e.getMessage().contains("For input string: \"\""));
+        }
+
+        map.put("keepAliveDuration", "str");
+        try {
+            clientBuilder.connectionPool(map);
+            Assert.fail();
+        } catch (Exception e) {
+            Assert.assertTrue(e.getMessage().contains("For input string: \"str\""));
+        }
+
+        map.put("keepAliveDuration", 0);
+        try {
+            clientBuilder.connectionPool(map);
+            Assert.fail();
+        } catch (IllegalArgumentException e) {
+            Assert.assertTrue(e.getMessage().contains("keepAliveDuration <= 0: 0"));
+        }
+
+        map.put("keepAliveDuration", 100L);
+        clientBuilder.connectionPool(map);
+        Mockito.verify(clientBuilder, Mockito.times(7)).connectionPool(map);
     }
 
     @Test