diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b553130d..96b430bcb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,3 +5,4 @@
 - [Optimize: Register the service with the ProviderAPI#registerInstance method.](https://github.com/Tencent/spring-cloud-tencent/pull/685)
 - [Optimize:optimize spring annotation.](https://github.com/Tencent/spring-cloud-tencent/pull/688)
 - [docs:update PR template.](https://github.com/Tencent/spring-cloud-tencent/pull/691)
+- [Code optimize & add junit tests.](https://github.com/Tencent/spring-cloud-tencent/pull/703)
diff --git a/spring-cloud-tencent-plugin-starters/spring-cloud-tencent-gateway-plugin/src/test/java/com/tencent/cloud/plugin/gateway/staining/rule/StainingRuleManagerTest.java b/spring-cloud-tencent-plugin-starters/spring-cloud-tencent-gateway-plugin/src/test/java/com/tencent/cloud/plugin/gateway/staining/rule/StainingRuleManagerTest.java
index 1ac88e3c8..2972d0d84 100644
--- a/spring-cloud-tencent-plugin-starters/spring-cloud-tencent-gateway-plugin/src/test/java/com/tencent/cloud/plugin/gateway/staining/rule/StainingRuleManagerTest.java
+++ b/spring-cloud-tencent-plugin-starters/spring-cloud-tencent-gateway-plugin/src/test/java/com/tencent/cloud/plugin/gateway/staining/rule/StainingRuleManagerTest.java
@@ -59,7 +59,7 @@ public class StainingRuleManagerTest {
 				+ "                {\n"
 				+ "                    \"key\":\"${http.query.uid}\",\n"
 				+ "                    \"values\":[\"1000\"],\n"
-				+ "                    \"operation\":\"EQUAL\"\n"
+				+ "                    \"operation\":\"EQUALS\"\n"
 				+ "                }\n"
 				+ "            ],\n"
 				+ "            \"labels\":[\n"
@@ -99,7 +99,7 @@ public class StainingRuleManagerTest {
 				+ "                {\n"
 				+ "                    \"key\":\"${http.query.uid}\",\n"
 				+ "                    \"values\":[\"1000\"],\n"
-				+ "                    \"operation\":\"EQUAL\"\n"
+				+ "                    \"operation\":\"EQUALS\"\n"
 				+ "                }\n"
 				+ "            ],\n"
 				+ "            \"labels\":[\n"