diff --git a/neutrino-proxy-client-sdk/src/main/java/org/dromara/neutrinoproxy/client/sdk/core/CustomThreadFactory.java b/neutrino-proxy-client-sdk/src/main/java/org/dromara/neutrinoproxy/client/sdk/core/CustomThreadFactory.java
index 1bddce35..4693e4a4 100644
--- a/neutrino-proxy-client-sdk/src/main/java/org/dromara/neutrinoproxy/client/sdk/core/CustomThreadFactory.java
+++ b/neutrino-proxy-client-sdk/src/main/java/org/dromara/neutrinoproxy/client/sdk/core/CustomThreadFactory.java
@@ -35,9 +35,7 @@ public class CustomThreadFactory implements ThreadFactory {
 	private final String namePrefix;
 
 	public CustomThreadFactory(String prefix) {
-		SecurityManager s = System.getSecurityManager();
-		group = (s != null) ? s.getThreadGroup() :
-			Thread.currentThread().getThreadGroup();
+		group = Thread.currentThread().getThreadGroup();
 		namePrefix = prefix + "-thread-";
 	}