diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/SpringValueProcessor.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/SpringValueProcessor.java
index 0656a1069..96912ea31 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/SpringValueProcessor.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/SpringValueProcessor.java
@@ -149,6 +149,9 @@ public class SpringValueProcessor extends PolarisProcessor implements BeanDefini
 
 	/**
 	 * @RefreshScope on method.
+	 * method parameter with @Value ${@link com.tencent.cloud.polaris.config.spring.annotation.RefreshScopeSpringProcessorTest.TestConfig3#testBean3}.
+	 * method parameter class with @ConfigurationProperties ${@link com.tencent.cloud.polaris.config.spring.annotation.RefreshScopeSpringProcessorTest.TestConfig4#testBean4}.
+	 * @ConfigurationProperties outside method may effect @RefreshScope bean${@link com.tencent.cloud.polaris.config.spring.annotation.RefreshScopeSpringProcessorTest.TestConfig5#testBean5()}.
 	 * @param bean spring bean.
 	 * @param method method.
 	 */
@@ -205,9 +208,15 @@ public class SpringValueProcessor extends PolarisProcessor implements BeanDefini
 	}
 
 	/**
-	 * parse refresh scope keys from @ConfigurationProperties and prefix.
-	 * @param configClazz class of @ConfigurationProperties bean.
-	 * @param prefix config prefix.
+	 * parse all fields of the configClazz.
+	 * if the field is primitive or wrapper, add it to refresh scope key map.
+	 * ${@link com.tencent.cloud.polaris.config.spring.annotation.RefreshScopeSpringProcessorTest.TestBeanProperties2#name}
+	 * if the field is collection, add it to refresh scope prefix trie node.
+	 * ${@link com.tencent.cloud.polaris.config.spring.annotation.RefreshScopeSpringProcessorTest.TestBeanProperties2#list}
+	 * if the field is complex type, recursive parse.
+	 * ${@link com.tencent.cloud.polaris.config.spring.annotation.RefreshScopeSpringProcessorTest.TestBeanProperties2#inner}
+	 * @param configClazz class or subclass of @ConfigurationProperties bean.
+	 * @param prefix prefix or subclass's prefix of @ConfigurationProperties bean.
 	 */
 	private void parseConfigKeys(Class<?> configClazz, String prefix) {
 		for (Field field : findAllField(configClazz)) {
diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueRegistry.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueRegistry.java
index 1e865087c..724ea7357 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueRegistry.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueRegistry.java
@@ -131,6 +131,11 @@ public class SpringValueRegistry implements DisposableBean {
 		refreshScopeKeys.addAll(keys);
 	}
 
+	/**
+	 * first check if the key is in refreshScopeKeys, if not, check the key by TrieUtil.
+	 * @param key changed key.
+	 * @return true if the key is refresh scope key, otherwise false.
+	 */
 	public boolean isRefreshScopeKey(String key) {
 		if (refreshScopeKeys.contains(key)) {
 			return true;
diff --git a/spring-cloud-starter-tencent-polaris-config/src/test/java/com/tencent/cloud/polaris/config/spring/annotation/RefreshScopeSpringProcessorTest.java b/spring-cloud-starter-tencent-polaris-config/src/test/java/com/tencent/cloud/polaris/config/spring/annotation/RefreshScopeSpringProcessorTest.java
index d4a70ab6d..7507ab6f3 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/test/java/com/tencent/cloud/polaris/config/spring/annotation/RefreshScopeSpringProcessorTest.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/test/java/com/tencent/cloud/polaris/config/spring/annotation/RefreshScopeSpringProcessorTest.java
@@ -211,7 +211,9 @@ public class RefreshScopeSpringProcessorTest {
 		@Bean
 		@RefreshScope
 		public TestBean testBean5() {
-			return new TestBean();
+			TestBean testBean = new TestBean();
+			testBean.setName(testBeanProperties2.getName());
+			return testBean;
 		}
 	}