diff --git a/dubbo-registry/dubbo-registry-api/src/main/java/com/alibaba/dubbo/registry/integration/RegistryDirectory.java b/dubbo-registry/dubbo-registry-api/src/main/java/com/alibaba/dubbo/registry/integration/RegistryDirectory.java
index a7eb61d1b272a242ed31b77a18970805926d56d7..9112ceb04eb27c808cce3fd8b81027d633ba0814 100644
--- a/dubbo-registry/dubbo-registry-api/src/main/java/com/alibaba/dubbo/registry/integration/RegistryDirectory.java
+++ b/dubbo-registry/dubbo-registry-api/src/main/java/com/alibaba/dubbo/registry/integration/RegistryDirectory.java
@@ -339,12 +339,15 @@ public class RegistryDirectory<T> extends AbstractDirectory<T> implements Notify
      * @return invokers
      */
     private Map<String, Invoker<T>> toInvokers(List<URL> urls) {
+        Map<String, Invoker<T>> newUrlInvokerMap = new HashMap<String, Invoker<T>>();
         if(urls == null || urls.size() == 0){
-            return null;
+            return newUrlInvokerMap;
         }
-        Map<String, Invoker<T>> newUrlInvokerMap = new HashMap<String, Invoker<T>>();
         Set<String> keys = new HashSet<String>();
         for (URL providerUrl : urls) {
+            if (Constants.EMPTY_PROTOCOL.equals(providerUrl.getProtocol())) {
+                continue;
+            }
             URL url = mergeUrl(providerUrl);
             
             String key = url.toFullString(); // URL参数是排序的