diff --git a/dubbo-common/src/main/java/com/alibaba/dubbo/common/URL.java b/dubbo-common/src/main/java/com/alibaba/dubbo/common/URL.java
index 7180a673ab58de31144d4793ddd69f12aac192c1..a316691dc36442bb5480e02f1c4de1b6ca5863df 100644
--- a/dubbo-common/src/main/java/com/alibaba/dubbo/common/URL.java
+++ b/dubbo-common/src/main/java/com/alibaba/dubbo/common/URL.java
@@ -253,6 +253,15 @@ public final class URL implements Serializable {
 	public String getPassword() {
 		return password;
 	}
+	
+	public String getAuthority() {
+	    if ((username == null || username.length() == 0)
+	            && (password == null || password.length() == 0)) {
+	        return null;
+	    }
+	    return (username == null ? "" : username) 
+	            + ":" + (password == null ? "" : password);
+	}
 
 	public String getHost() {
 		return host;
diff --git a/dubbo-registry/dubbo-registry-zookeeper/src/main/java/com/alibaba/dubbo/registry/zookeeper/ZookeeperRegistry.java b/dubbo-registry/dubbo-registry-zookeeper/src/main/java/com/alibaba/dubbo/registry/zookeeper/ZookeeperRegistry.java
index 51747d9368fcb820ad4c953aba3aced0f88cbad3..e46399e74f200404f48072eb5bb1e366548ec6f3 100644
--- a/dubbo-registry/dubbo-registry-zookeeper/src/main/java/com/alibaba/dubbo/registry/zookeeper/ZookeeperRegistry.java
+++ b/dubbo-registry/dubbo-registry-zookeeper/src/main/java/com/alibaba/dubbo/registry/zookeeper/ZookeeperRegistry.java
@@ -249,7 +249,7 @@ public class ZookeeperRegistry extends FailbackRegistry {
             }
         });
         if (auth) {
-            zk.addAuthInfo(url.getUsername(), url.getPassword().getBytes());
+            zk.addAuthInfo("digest", url.getAuthority().getBytes());
         }
         return zk;
     }