diff --git a/CHANGELOG.md b/CHANGELOG.md
index 14bab4694..ddfa729fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,3 +24,4 @@
 - [fix: fix loadbalancer metadata type.](https://github.com/Tencent/spring-cloud-tencent/pull/1623)
 - [feat:support polaris server nearby backup LB.](https://github.com/Tencent/spring-cloud-tencent/pull/1628)
 - fix:fix ipv6 instance not found bug.
+- fix:fix tsf lossless not working bug.
diff --git a/spring-cloud-tencent-polaris-context/src/main/java/com/tencent/cloud/polaris/context/config/extend/tsf/TsfCoreEnvironmentPostProcessor.java b/spring-cloud-tencent-polaris-context/src/main/java/com/tencent/cloud/polaris/context/config/extend/tsf/TsfCoreEnvironmentPostProcessor.java
index 4a82cfeb0..8a1660488 100644
--- a/spring-cloud-tencent-polaris-context/src/main/java/com/tencent/cloud/polaris/context/config/extend/tsf/TsfCoreEnvironmentPostProcessor.java
+++ b/spring-cloud-tencent-polaris-context/src/main/java/com/tencent/cloud/polaris/context/config/extend/tsf/TsfCoreEnvironmentPostProcessor.java
@@ -69,6 +69,8 @@ public final class TsfCoreEnvironmentPostProcessor implements EnvironmentPostPro
 			String polarisAdminPort = environment.getProperty("polaris_admin_port");
 			if (StringUtils.isNotBlank(polarisAdminPort)) {
 				defaultProperties.put("spring.cloud.polaris.lossless.enabled", environment.getProperty("spring.cloud.polaris.lossless.enabled", "true"));
+				// for tsf health check.
+				defaultProperties.put("spring.cloud.polaris.stat.enabled", environment.getProperty("spring.cloud.polaris.stat.enabled", "true"));
 			}
 
 			String tsfPreferIpv6 = environment.getProperty("tsf_prefer_ipv6");