diff --git a/src/main/java/io/jboot/components/rpc/JbootrpcBase.java b/src/main/java/io/jboot/components/rpc/JbootrpcBase.java
index 1474855a591e3ea14ffa8ff89f0df0a5be1cdde7..00b6a84c4b3cd3d52c87dc06f4516fbdfa2f0d6d 100644
--- a/src/main/java/io/jboot/components/rpc/JbootrpcBase.java
+++ b/src/main/java/io/jboot/components/rpc/JbootrpcBase.java
@@ -35,7 +35,8 @@ public abstract class JbootrpcBase implements Jbootrpc {
         T object = (T) objectCache.get(key);
         if (object == null) {
             synchronized (this) {
-                if (objectCache.get(key) == null) {
+                object = (T) objectCache.get(key);
+                if (object == null) {
 
                     // onStart 方法是在 app 启动完成后，Jboot 主动去调用的
                     // 但是，在某些场景可能存在没有等 app 启动完成就去获取 Service 的情况