diff --git a/hippo4j-core/src/main/java/cn/hippo4j/core/executor/support/ThreadFactoryBuilder.java b/hippo4j-core/src/main/java/cn/hippo4j/core/executor/support/ThreadFactoryBuilder.java
index 6e56dc07..ff78da04 100644
--- a/hippo4j-core/src/main/java/cn/hippo4j/core/executor/support/ThreadFactoryBuilder.java
+++ b/hippo4j-core/src/main/java/cn/hippo4j/core/executor/support/ThreadFactoryBuilder.java
@@ -91,7 +91,7 @@ public class ThreadFactoryBuilder implements Builder<ThreadFactory> {
         return r -> {
             final Thread thread = backingThreadFactory.newThread(r);
             if (null != namePrefix) {
-                thread.setName(namePrefix + "-" + count.getAndIncrement());
+                thread.setName(namePrefix + "_" + count.getAndIncrement());
             }
             if (null != daemon) {
                 thread.setDaemon(daemon);