diff --git a/pom.xml b/pom.xml
index ad8e604..5bafc5e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -123,6 +123,15 @@
     </dependencies>
 
     <build>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+                <includes>
+                    <include>version.properties</include>
+                </includes>
+            </resource>
+        </resources>
         <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
diff --git a/src/main/java/com/aliyun/credentials/http/CompatibleUrlConnClient.java b/src/main/java/com/aliyun/credentials/http/CompatibleUrlConnClient.java
index 2f1d015..af01fc6 100644
--- a/src/main/java/com/aliyun/credentials/http/CompatibleUrlConnClient.java
+++ b/src/main/java/com/aliyun/credentials/http/CompatibleUrlConnClient.java
@@ -9,11 +9,28 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Properties;
 
 public class CompatibleUrlConnClient implements Closeable {
 
     protected static final String ACCEPT_ENCODING = "Accept-Encoding";
     protected static final String CONTENT_TYPE = "Content-Type";
+    protected static final String USER_AGENT = "User-Agent";
+    private static final String DEFAULT_USER_AGENT;
+
+    static {
+        Properties sysProps = System.getProperties();
+        String version = "";
+        Properties props = new Properties();
+        try {
+            props.load(CompatibleUrlConnClient.class.getClassLoader().getResourceAsStream("version.properties"));
+            version = props.getProperty("sdk.credentials.version");
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        DEFAULT_USER_AGENT = String.format("AlibabaCloud (%s; %s) Java/%s Credentials/%s TeaDSL/1", sysProps.getProperty("os.name"), sysProps
+                .getProperty("os.arch"), sysProps.getProperty("java.runtime.version"), version);
+    }
 
     public CompatibleUrlConnClient() {
 
@@ -102,6 +119,7 @@ public HttpURLConnection initHttpConnection(URL url, HttpRequest request) {
             httpConn.setUseCaches(false);
             setConnectionTimeout(httpConn, request);
             httpConn.setRequestProperty(ACCEPT_ENCODING, "identity");
+            httpConn.setRequestProperty(USER_AGENT, DEFAULT_USER_AGENT);
             Map<String, String> mappedHeaders = request.getSysHeaders();
             for (Entry<String, String> entry : mappedHeaders.entrySet()) {
                 httpConn.setRequestProperty(entry.getKey(), entry.getValue());
diff --git a/src/main/resources/version.properties b/src/main/resources/version.properties
new file mode 100644
index 0000000..f9cf48a
--- /dev/null
+++ b/src/main/resources/version.properties
@@ -0,0 +1 @@
+sdk.credentials.version=${project.version}
\ No newline at end of file
diff --git a/src/test/java/com/aliyun/credentials/http/CompatibleUrlConnClientTest.java b/src/test/java/com/aliyun/credentials/http/CompatibleUrlConnClientTest.java
index 613a899..9ffcf0c 100644
--- a/src/test/java/com/aliyun/credentials/http/CompatibleUrlConnClientTest.java
+++ b/src/test/java/com/aliyun/credentials/http/CompatibleUrlConnClientTest.java
@@ -10,6 +10,8 @@
 import java.util.HashMap;
 import java.util.Locale;
 import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 public class CompatibleUrlConnClientTest {
     @Test
@@ -66,5 +68,8 @@ public void buildHttpConnectionTest() {
         HttpURLConnection connection = client.buildHttpConnection(request);
         Assert.assertEquals("value1", connection.getRequestProperty("header1"));
         Assert.assertEquals("json", connection.getRequestProperty("Content-Type"));
+        Pattern pattern = Pattern.compile("AlibabaCloud (.+; .+) Java/.+ Credentials/.+ TeaDSL/1");
+        Matcher matcher = pattern.matcher(connection.getRequestProperty("User-Agent"));
+        Assert.assertTrue(matcher.find());
     }
 }