diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/resources/bootstrap.properties b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/resources/bootstrap.properties
index 691cba2d1..b47c5dc0d 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/resources/bootstrap.properties
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/resources/bootstrap.properties
@@ -31,7 +31,8 @@ spring.cloud.nacos.config.extension-configs[0].refresh=true
 spring.cloud.nacos.config.extension-configs[1].data-id=test1.yml
 spring.cloud.nacos.config.extension-configs[1].refresh=true
 
-
+# the setting of reading config log print on stdout
+logging.level.com.alibaba.cloud.nacos.client=debug
 
 
 spring.cloud.nacos.config.refresh-enabled=true