diff --git a/java/src/main/java/com/aliyun/teautil/models/RuntimeOptions.java b/java/src/main/java/com/aliyun/teautil/models/RuntimeOptions.java
index 700a289..e8881e4 100644
--- a/java/src/main/java/com/aliyun/teautil/models/RuntimeOptions.java
+++ b/java/src/main/java/com/aliyun/teautil/models/RuntimeOptions.java
@@ -84,6 +84,12 @@ public class RuntimeOptions extends TeaModel {
      */
     @NameInMap("extendsParameters")
     public ExtendsParameters extendsParameters;
+    
+    /**
+     * <p>Domain</p>
+     */
+    @NameInMap("domain")
+    public String domain;
 
     public static RuntimeOptions build(java.util.Map<String, ?> map) throws Exception {
         RuntimeOptions self = new RuntimeOptions();
@@ -242,4 +248,12 @@ public ExtendsParameters getExtendsParameters() {
         return this.extendsParameters;
     }
 
+    public RuntimeOptions setDomain(String domain) {
+        this.domain = domain;
+        return this;
+    }
+    
+    public String getDomain() { 
+        return this.domain; 
+    }
 }
diff --git a/java/src/test/java/com/aliyun/teautil/models/RuntimeOptionsTest.java b/java/src/test/java/com/aliyun/teautil/models/RuntimeOptionsTest.java
index ed6631c..da78beb 100644
--- a/java/src/test/java/com/aliyun/teautil/models/RuntimeOptionsTest.java
+++ b/java/src/test/java/com/aliyun/teautil/models/RuntimeOptionsTest.java
@@ -25,6 +25,7 @@ public void setAndGetTest() throws Exception {
         map.put("noProxy", "noProxy");
         map.put("maxIdleConns", 300);
         map.put("keepAlive", true);
+        map.put("domain", "xx.xx.xx.xx");
 
         Map<String, String> headers = new HashMap<String, String>();
         headers.put("key", "value");
@@ -38,6 +39,10 @@ public void setAndGetTest() throws Exception {
         RuntimeOptions opts = RuntimeOptions.build(map);
         Assert.assertEquals(false, opts.autoretry);
         Assert.assertEquals(false, opts.ignoreSSL);
+        Assert.assertEquals("xx.xx.xx.xx", opts.domain);
+        
+        opts.setDomain("test.domain.com");
+        Assert.assertEquals("test.domain.com", opts.getDomain());
         Assert.assertEquals("key", opts.key);
         Assert.assertEquals("cert", opts.cert);
         Assert.assertEquals("ca", opts.ca);