diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5f80ad887..48f7d7a7e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 - [fix:fix feign url bug when using sleuth.](https://github.com/Tencent/spring-cloud-tencent/pull/1096)
 - [fix: dynamic routing using cookies.](https://github.com/Tencent/spring-cloud-tencent/pull/1097)
 - [Refactoring:remove invalid @AutoConfigureAfter and @AutoConfigureBefore from discovery client automatic configuration.](https://github.com/Tencent/spring-cloud-tencent/pull/1115)
+- [feat: support nacos namespace mapping](https://github.com/Tencent/spring-cloud-tencent/pull/1122)
 - [feat: support log path configuration parameters.](https://github.com/Tencent/spring-cloud-tencent/pull/1128)
 - [refactor:optimize the order and condition matching of service registration automatic configuration.](https://github.com/Tencent/spring-cloud-tencent/pull/1129)
 - [feat: add circuit breaker actuator.](https://github.com/Tencent/spring-cloud-tencent/pull/1136)
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/extend/nacos/NacosConfigModifier.java b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/extend/nacos/NacosConfigModifier.java
index 14e74be7c..968ad5b21 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/extend/nacos/NacosConfigModifier.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/extend/nacos/NacosConfigModifier.java
@@ -55,6 +55,14 @@ public class NacosConfigModifier implements PolarisConfigModifier {
 	 * nacos contextPath.
 	 */
 	public static final String CONTEXT_PATH = "contextPath";
+	/**
+	 * nacos namespace.
+	 */
+	public static final String NAMESPACE = "namespace";
+	/**
+	 * nacos group.
+	 */
+	public static final String GROUP = "group";
 	private static final Logger LOGGER = LoggerFactory.getLogger(NacosConfigModifier.class);
 	private static final String ID = "nacos";
 	private final NacosContextProperties nacosContextProperties;
@@ -115,6 +123,14 @@ public void modify(ConfigurationImpl configuration) {
 			metadata.put(CONTEXT_PATH, nacosContextProperties.getContextPath());
 		}
 
+		if (StringUtils.isNotBlank(nacosContextProperties.getNamespace())) {
+			metadata.put(NAMESPACE, nacosContextProperties.getNamespace());
+		}
+
+		if (StringUtils.isNotBlank(nacosContextProperties.getGroup())) {
+			metadata.put(GROUP, nacosContextProperties.getGroup());
+		}
+
 		configuration.getGlobal().getServerConnectors().add(serverConnectorConfig);
 		DiscoveryConfigImpl discoveryConfig = new DiscoveryConfigImpl();
 		discoveryConfig.setServerConnectorId(ID);
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/extend/nacos/NacosContextProperties.java b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/extend/nacos/NacosContextProperties.java
index 905b3818d..07e2521b9 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/extend/nacos/NacosContextProperties.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/extend/nacos/NacosContextProperties.java
@@ -39,6 +39,11 @@ public class NacosContextProperties {
 	 */
 	public static final String DEFAULT_CLUSTER = "DEFAULT";
 
+	/**
+	 * Nacos default namespace name.
+	 */
+	public static final String DEFAULT_NAMESPACE = "public";
+
 	private boolean enabled = false;
 
 	@Value("${spring.cloud.nacos.discovery.enabled:#{'true'}}")
@@ -81,6 +86,9 @@ public class NacosContextProperties {
 	@Value("${spring.cloud.nacos.discovery.group:DEFAULT_GROUP}")
 	private String group = DEFAULT_GROUP;
 
+	@Value("${spring.cloud.nacos.discovery.namespace:public}")
+	private String namespace = DEFAULT_NAMESPACE;
+
 	private String contextPath;
 
 	public boolean isEnabled() {
@@ -155,6 +163,14 @@ public void setContextPath(String contextPath) {
 		this.contextPath = contextPath;
 	}
 
+	public String getNamespace() {
+		return namespace;
+	}
+
+	public void setNamespace(String namespace) {
+		this.namespace = namespace;
+	}
+
 	@Override
 	public String toString() {
 		return "NacosContextProperties{" +
@@ -167,6 +183,7 @@ public String toString() {
 				", clusterName='" + clusterName + '\'' +
 				", group='" + group + '\'' +
 				", contextPath='" + contextPath + '\'' +
+				", namespace='" + namespace + '\'' +
 				'}';
 	}
 }
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/resources/META-INF/additional-spring-configuration-metadata.json b/spring-cloud-starter-tencent-polaris-discovery/src/main/resources/META-INF/additional-spring-configuration-metadata.json
index a16b6b8e4..8e5b628af 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/resources/META-INF/additional-spring-configuration-metadata.json
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/resources/META-INF/additional-spring-configuration-metadata.json
@@ -91,6 +91,13 @@
       "sourceType": "com.tencent.cloud.polaris.extend.nacos.NacosContextProperties",
       "defaultValue": "DEFAULT_GROUP"
     },
+    {
+      "name": "spring.cloud.nacos.discovery.namespace",
+      "type": "java.lang.String",
+      "description": "namespace id for nacos.",
+      "sourceType": "com.tencent.cloud.polaris.extend.nacos.NacosContextProperties",
+      "defaultValue": "public"
+    },
     {
       "name": "spring.cloud.nacos.discovery.password",
       "type": "java.lang.String",
@@ -123,7 +130,7 @@
       "sourceType": "com.tencent.cloud.polaris.extend.nacos.NacosContextProperties"
     }
   ],
-  "hints" : [
+  "hints": [
     {
       "name": "spring.cloud.polaris.loadbalancer.strategy",
       "values": [
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/test/java/com/tencent/cloud/polaris/extend/nacos/NacosContextPropertiesTest.java b/spring-cloud-starter-tencent-polaris-discovery/src/test/java/com/tencent/cloud/polaris/extend/nacos/NacosContextPropertiesTest.java
index 7a76e9a5e..ed51e534f 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/test/java/com/tencent/cloud/polaris/extend/nacos/NacosContextPropertiesTest.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/test/java/com/tencent/cloud/polaris/extend/nacos/NacosContextPropertiesTest.java
@@ -62,6 +62,7 @@ public void testDefaultInitialization() {
 		assertThat(nacosContextProperties.isDiscoveryEnabled()).isTrue();
 		assertThat(nacosContextProperties.getGroup()).isNotBlank();
 		assertThat(nacosContextProperties.getClusterName()).isNotBlank();
+		assertThat(nacosContextProperties.getNamespace()).isNotBlank();
 	}
 
 	@Test
@@ -85,6 +86,8 @@ public void testModify() {
 		assertThat(metadata.get(NacosConfigModifier.USERNAME)).isEqualTo(nacosContextProperties.getUsername());
 		assertThat(metadata.get(NacosConfigModifier.PASSWORD)).isEqualTo(nacosContextProperties.getPassword());
 		assertThat(metadata.get(NacosConfigModifier.CONTEXT_PATH)).isEqualTo(nacosContextProperties.getContextPath());
+		assertThat(metadata.get(NacosConfigModifier.NAMESPACE)).isEqualTo(nacosContextProperties.getNamespace());
+		assertThat(metadata.get(NacosConfigModifier.GROUP)).isEqualTo(nacosContextProperties.getGroup());
 	}
 
 	@SpringBootApplication
diff --git a/spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/metadata/MetadataContext.java b/spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/metadata/MetadataContext.java
index 75481aa5a..8fcd89855 100644
--- a/spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/metadata/MetadataContext.java
+++ b/spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/metadata/MetadataContext.java
@@ -88,7 +88,7 @@ public class MetadataContext {
 			throw new RuntimeException("namespace should not be blank. please configure spring.cloud.polaris.namespace or "
 					+ "spring.cloud.polaris.discovery.namespace");
 		}
-
+		namespace = DiscoveryUtil.rewriteNamespace(namespace);
 		LOCAL_NAMESPACE = namespace;
 
 		String serviceName = ApplicationContextAwareUtils
diff --git a/spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/util/DiscoveryUtil.java b/spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/util/DiscoveryUtil.java
index e5e5237bc..1e14c6c9a 100644
--- a/spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/util/DiscoveryUtil.java
+++ b/spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/util/DiscoveryUtil.java
@@ -32,6 +32,8 @@ public final class DiscoveryUtil {
 
 	private static String NACOS_GROUP;
 
+	private static String NACOS_NAMESPACE;
+
 	private static final Object MUTEX = new Object();
 
 	private static boolean INITIALIZE = false;
@@ -62,6 +64,29 @@ public static String rewriteServiceId(String serviceId) {
 		return serviceId;
 	}
 
+	/**
+	 * rewrite namespace when open double registry and discovery by nacos and polaris.
+	 *
+	 * @param namespace namespace
+	 * @return new namespace
+	 */
+	public static String rewriteNamespace(String namespace) {
+		init();
+		if (Boolean.parseBoolean(ENABLE_NACOS)) {
+			boolean rewrite = false;
+			if (Boolean.parseBoolean(ENABLE_NACOS_REGISTRY) && Boolean.parseBoolean(ENABLE_POLARIS_DISCOVERY)) {
+				rewrite = true;
+			}
+			if (Boolean.parseBoolean(ENABLE_NACOS_DISCOVERY) || Boolean.parseBoolean(ENABLE_POLARIS_DISCOVERY)) {
+				rewrite = true;
+			}
+			if (rewrite) {
+				namespace = NACOS_NAMESPACE;
+			}
+		}
+		return namespace;
+	}
+
 	private static void init() {
 		if (INITIALIZE) {
 			return;
@@ -75,6 +100,7 @@ private static void init() {
 			ENABLE_NACOS_REGISTRY = ApplicationContextAwareUtils.getProperties("spring.cloud.nacos.discovery.register-enabled");
 			ENABLE_POLARIS_DISCOVERY = ApplicationContextAwareUtils.getProperties("spring.cloud.polaris.discovery.enabled");
 			NACOS_GROUP = ApplicationContextAwareUtils.getProperties("spring.cloud.nacos.discovery.group", "DEFAULT_GROUP");
+			NACOS_NAMESPACE = ApplicationContextAwareUtils.getProperties("spring.cloud.nacos.discovery.namespace", "public");
 			INITIALIZE = true;
 		}
 	}