diff --git a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/AuthPathMapper.java b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/AuthPathMapper.java
index 3a92625612da..8c0ba91d1116 100644
--- a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/AuthPathMapper.java
+++ b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/AuthPathMapper.java
@@ -79,6 +79,22 @@ public interface AuthPathMapper extends ExistProvider {
      * @return the list
      */
     List<AuthPathDO> findByAuthId(String authId);
+
+    /**
+     * Find by namespace id list.
+     *
+     * @param namespaceId the namespaceId
+     * @return the list
+     */
+    List<AuthPathDO> findByNamespaceId(String namespaceId);
+
+    /**
+     * Find by namespace id list.
+     *
+     * @param namespaceIds the namespaceIds
+     * @return the list
+     */
+    List<AuthPathDO> findByNamespaceIds(List<String> namespaceIds);
     
     /**
      * find all the {@link AuthPathDO} by authIdList.
diff --git a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/DiscoveryMapper.java b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/DiscoveryMapper.java
index a4100af1b360..d0f7c63c3d33 100644
--- a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/DiscoveryMapper.java
+++ b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/DiscoveryMapper.java
@@ -63,6 +63,14 @@ public interface DiscoveryMapper extends ExistProvider {
      */
     List<DiscoveryDO> selectAllByNamespaceId(String namespaceId);
 
+    /**
+     * selectAllByNamespaceIds.
+     *
+     * @param namespaceIds the namespaceIds
+     * @return discoveryDOList
+     */
+    List<DiscoveryDO> selectAllByNamespaceIds(List<String> namespaceIds);
+
     /**
      * select discovery by plugin name and level.
      *
diff --git a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/MetaDataMapper.java b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/MetaDataMapper.java
index 723cdd815628..e4f33fa26640 100644
--- a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/MetaDataMapper.java
+++ b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/MetaDataMapper.java
@@ -72,6 +72,14 @@ public interface MetaDataMapper extends ExistProvider {
      * @return the list
      */
     List<MetaDataDO> findAllByNamespaceId(String namespaceId);
+
+    /**
+     * Find all list.
+     *
+     * @param namespaceIds the namespaceIds
+     * @return the list
+     */
+    List<MetaDataDO> findAllByNamespaceIds(List<String> namespaceIds);
     
     /**
      * Find meta data do by path and namespaceId.
diff --git a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/NamespacePluginRelMapper.java b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/NamespacePluginRelMapper.java
index bcddba5f0a2f..81cd5c292153 100644
--- a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/NamespacePluginRelMapper.java
+++ b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/NamespacePluginRelMapper.java
@@ -137,21 +137,16 @@ public interface NamespacePluginRelMapper extends ExistProvider {
      * @return {@linkplain List}
      */
     List<NamespacePluginVO> selectAllByNamespaceId(String namespaceId);
-    
-    /**
-     * select all.
-     *
-     * @return {@linkplain List}
-     */
-    List<NamespacePluginVO> selectAllByNamespaceId();
-    
+
     /**
-     * select all by namespaceId.
+     * select all by namespaceId list.
      *
-     * @param namespaceId namespaceId.
+     * @param namespaceIds namespaceIds.
      * @return {@linkplain List}
      */
-    List<NamespacePluginVO> selectByNamespaceId(String namespaceId);
+    List<NamespacePluginVO> selectAllByNamespaceIds(List<String> namespaceIds);
+
+    List<NamespacePluginVO> selectAll();
 
     /**
      * enable data by a list of ids.
diff --git a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/RuleMapper.java b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/RuleMapper.java
index bce950e7a2e9..39384cf49435 100644
--- a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/RuleMapper.java
+++ b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/RuleMapper.java
@@ -163,6 +163,14 @@ public interface RuleMapper extends ExistProvider {
      */
     List<RuleDO> selectAllByNamespaceId(String namespaceId);
 
+    /**
+     * list all.
+     *
+     * @param namespaceIds the namespaceIds
+     * @return {@linkplain List}
+     */
+    List<RuleDO> selectAllByNamespaceIds(List<String> namespaceIds);
+
     /**
      * search by condition.
      *
diff --git a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/SelectorMapper.java b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/SelectorMapper.java
index fb29e6672422..f1072eab1cfc 100644
--- a/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/SelectorMapper.java
+++ b/shenyu-admin/src/main/java/org/apache/shenyu/admin/mapper/SelectorMapper.java
@@ -194,6 +194,14 @@ SelectorDO findByNameAndPluginIdAndNamespaceId(@Param("name") String name,
      */
     List<SelectorDO> selectAllByNamespaceId(String namespaceId);
 
+    /**
+     * list all by namespaceId list.
+     *
+     * @param namespaceIds the namespaceIds
+     * @return {@linkplain List}
+     */
+    List<SelectorDO> selectAllByNamespaceIds(List<String> namespaceIds);
+
     /**
      * select by condition.
      *
diff --git a/shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/NamespacePluginServiceImpl.java b/shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/NamespacePluginServiceImpl.java
index 77bff91335c9..474f52cedc34 100644
--- a/shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/NamespacePluginServiceImpl.java
+++ b/shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/NamespacePluginServiceImpl.java
@@ -130,12 +130,12 @@ public List<PluginData> listAll(final String namespaceId) {
     
     @Override
     public List<PluginData> listAll() {
-        return ListUtil.map(namespacePluginRelMapper.selectAllByNamespaceId(), PluginTransfer.INSTANCE::mapToData);
+        return ListUtil.map(namespacePluginRelMapper.selectAll(), PluginTransfer.INSTANCE::mapToData);
     }
     
     @Override
     public List<NamespacePluginVO> listByNamespaceId(final String namespaceId) {
-        return namespacePluginRelMapper.selectByNamespaceId(namespaceId);
+        return namespacePluginRelMapper.selectAllByNamespaceId(namespaceId);
     }
 
     @Override
diff --git a/shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/NamespaceServiceImpl.java b/shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/NamespaceServiceImpl.java
index e0176198b133..d10a27cff441 100644
--- a/shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/NamespaceServiceImpl.java
+++ b/shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/NamespaceServiceImpl.java
@@ -21,13 +21,25 @@
 import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.shenyu.admin.exception.ShenyuAdminException;
+import org.apache.shenyu.admin.mapper.AuthPathMapper;
+import org.apache.shenyu.admin.mapper.DiscoveryMapper;
+import org.apache.shenyu.admin.mapper.MetaDataMapper;
 import org.apache.shenyu.admin.mapper.NamespaceMapper;
+import org.apache.shenyu.admin.mapper.NamespacePluginRelMapper;
+import org.apache.shenyu.admin.mapper.RuleMapper;
+import org.apache.shenyu.admin.mapper.SelectorMapper;
 import org.apache.shenyu.admin.model.dto.NamespaceDTO;
+import org.apache.shenyu.admin.model.entity.AuthPathDO;
+import org.apache.shenyu.admin.model.entity.DiscoveryDO;
+import org.apache.shenyu.admin.model.entity.MetaDataDO;
 import org.apache.shenyu.admin.model.entity.NamespaceDO;
+import org.apache.shenyu.admin.model.entity.RuleDO;
+import org.apache.shenyu.admin.model.entity.SelectorDO;
 import org.apache.shenyu.admin.model.event.namespace.NamespaceCreatedEvent;
 import org.apache.shenyu.admin.model.page.CommonPager;
 import org.apache.shenyu.admin.model.page.PageResultUtils;
 import org.apache.shenyu.admin.model.query.NamespaceQuery;
+import org.apache.shenyu.admin.model.vo.NamespacePluginVO;
 import org.apache.shenyu.admin.model.vo.NamespaceVO;
 import org.apache.shenyu.admin.service.NamespaceService;
 import org.apache.shenyu.admin.service.NamespaceUserService;
@@ -51,17 +63,42 @@
 public class NamespaceServiceImpl implements NamespaceService {
 
     private final NamespaceMapper namespaceMapper;
-    
+
     private final NamespaceUserService namespaceUserService;
-    
+
     private final NamespaceEventPublisher namespaceEventPublisher;
 
+    private final SelectorMapper selectorMapper;
+
+    private final RuleMapper ruleMapper;
+
+    private final AuthPathMapper authPathMapper;
+
+    private final MetaDataMapper metaDataMapper;
+
+    private final DiscoveryMapper discoveryMapper;
+
+    private final NamespacePluginRelMapper namespacePluginRelMapper;
+
+
     public NamespaceServiceImpl(final NamespaceMapper namespaceMapper,
                                 final NamespaceUserService namespaceUserService,
-                                final NamespaceEventPublisher namespaceEventPublisher) {
+                                final NamespaceEventPublisher namespaceEventPublisher,
+                                final NamespacePluginRelMapper namespacePluginRelMapper,
+                                final SelectorMapper selectorMapper,
+                                final RuleMapper ruleMapper,
+                                final AuthPathMapper authPathMapper,
+                                final MetaDataMapper metaDataMapper,
+                                final DiscoveryMapper discoveryMapper) {
         this.namespaceMapper = namespaceMapper;
         this.namespaceUserService = namespaceUserService;
         this.namespaceEventPublisher = namespaceEventPublisher;
+        this.namespacePluginRelMapper = namespacePluginRelMapper;
+        this.selectorMapper = selectorMapper;
+        this.ruleMapper = ruleMapper;
+        this.authPathMapper = authPathMapper;
+        this.metaDataMapper = metaDataMapper;
+        this.discoveryMapper = discoveryMapper;
     }
 
     @Override
@@ -87,11 +124,35 @@ public CommonPager<NamespaceVO> listByPage(final NamespaceQuery namespaceQuery)
     @Override
     public String delete(final List<String> ids) {
         if (ids.contains(Constants.DEFAULT_NAMESPACE_PRIMARY_KEY)) {
-            return AdminConstants.SYS_DEFAULT_NAMESPACE_ID_DELETE;
+            throw new ShenyuAdminException(AdminConstants.SYS_DEFAULT_NAMESPACE_ID_DELETE);
         }
-        List<NamespaceDO> namespaceDOS = namespaceMapper.selectByIds(ids);
-        if (CollectionUtils.isEmpty(namespaceDOS)) {
-            return AdminConstants.SYS_NAMESPACE_ID_NOT_EXIST;
+        List<String> namespaceIdList = namespaceMapper.selectByIds(ids).stream().map(NamespaceDO::getNamespaceId).collect(Collectors.toList());
+        if (CollectionUtils.isEmpty(namespaceIdList)) {
+            throw new ShenyuAdminException(AdminConstants.SYS_NAMESPACE_ID_NOT_EXIST);
+        }
+        List<NamespacePluginVO> namespacePluginVOS = namespacePluginRelMapper.selectAllByNamespaceIds(namespaceIdList);
+        if (CollectionUtils.isNotEmpty(namespacePluginVOS)) {
+            throw new ShenyuAdminException("Plugins exist under those namespace!");
+        }
+        List<SelectorDO> selectorDOS = selectorMapper.selectAllByNamespaceIds(namespaceIdList);
+        if (CollectionUtils.isNotEmpty(selectorDOS)) {
+            throw new ShenyuAdminException("selector exist under those namespace!");
+        }
+        List<RuleDO> ruleDOList = ruleMapper.selectAllByNamespaceIds(namespaceIdList);
+        if (CollectionUtils.isNotEmpty(ruleDOList)) {
+            throw new ShenyuAdminException("rule exist under those namespace!");
+        }
+        List<MetaDataDO> metaDataDOList = metaDataMapper.findAllByNamespaceIds(namespaceIdList);
+        if (CollectionUtils.isNotEmpty(metaDataDOList)) {
+            throw new ShenyuAdminException("metaData exist under those namespace!");
+        }
+        List<AuthPathDO> authPathDOList = authPathMapper.findByNamespaceIds(namespaceIdList);
+        if (CollectionUtils.isNotEmpty(authPathDOList)) {
+            throw new ShenyuAdminException("authPath exist under those namespace!");
+        }
+        List<DiscoveryDO> discoveryDOList = discoveryMapper.selectAllByNamespaceIds(namespaceIdList);
+        if (CollectionUtils.isNotEmpty(discoveryDOList)) {
+            throw new ShenyuAdminException("discovery exist under those namespace!");
         }
         namespaceMapper.deleteByIds(ids);
         return ShenyuResultMessage.DELETE_SUCCESS;
@@ -110,11 +171,11 @@ public NamespaceVO findByNamespaceId(final String namespaceId) {
     @Override
     public List<NamespaceVO> list(final String name) {
         List<String> namespaceIds = namespaceUserService.listNamespaceIdByUserId(SessionUtil.visitorId());
-        
+
         if (CollectionUtils.isEmpty(namespaceIds)) {
             return Lists.newArrayList();
         }
-        
+
         List<NamespaceDO> namespaceDOS = namespaceMapper.selectByNamespaceIdsAndName(namespaceIds, name);
         if (CollectionUtils.isEmpty(namespaceDOS)) {
             return Lists.newArrayList();
@@ -142,9 +203,9 @@ private NamespaceVO create(final NamespaceDTO namespaceDTO) {
                 .dateUpdated(currentTime)
                 .build();
         namespaceMapper.insert(namespaceDO);
-        
+
         namespaceEventPublisher.publish(new NamespaceCreatedEvent(namespaceDO, SessionUtil.visitorId()));
-        
+
         return NamespaceTransfer.INSTANCE.mapToVo(namespaceDO);
     }
 
diff --git a/shenyu-admin/src/main/resources/mappers/auth-path-sqlmap.xml b/shenyu-admin/src/main/resources/mappers/auth-path-sqlmap.xml
index ce7619e27b21..d33c02543be1 100644
--- a/shenyu-admin/src/main/resources/mappers/auth-path-sqlmap.xml
+++ b/shenyu-admin/src/main/resources/mappers/auth-path-sqlmap.xml
@@ -45,6 +45,23 @@
          WHERE auth_id = #{authId, jdbcType=VARCHAR}
     </select>
 
+    <select id="findByNamespaceId" parameterType="java.lang.String" resultMap="BaseResultMap">
+        SELECT
+        <include refid="Base_Column_List"/>
+        FROM auth_path
+        WHERE namespace_id = #{namespaceId, jdbcType=VARCHAR}
+    </select>
+
+    <select id="findByNamespaceIds" parameterType="java.lang.String" resultMap="BaseResultMap">
+        SELECT
+        <include refid="Base_Column_List"/>
+        FROM auth_path
+        WHERE namespace_id IN
+        <foreach item="namespaceId" collection="namespaceIds" open="(" separator="," close=")">
+            #{namespaceId, jdbcType=VARCHAR}
+        </foreach>
+    </select>
+
     <select id="findByAuthIdList" parameterType="java.lang.String" resultMap="BaseResultMap">
         SELECT
                <include refid="Base_Column_List"/>
diff --git a/shenyu-admin/src/main/resources/mappers/discovery-sqlmap.xml b/shenyu-admin/src/main/resources/mappers/discovery-sqlmap.xml
index e48107fa177c..3e0148aaacd8 100644
--- a/shenyu-admin/src/main/resources/mappers/discovery-sqlmap.xml
+++ b/shenyu-admin/src/main/resources/mappers/discovery-sqlmap.xml
@@ -77,6 +77,16 @@
         WHERE namespace_id = #{namespaceId, jdbcType=VARCHAR}
     </select>
 
+    <select id="selectAllByNamespaceIds" resultType="org.apache.shenyu.admin.model.entity.DiscoveryDO">
+        SELECT
+        <include refid="Base_Column_List"/>
+        FROM discovery
+        WHERE namespace_id IN
+        <foreach item="namespaceId" collection="namespaceIds" open="(" separator="," close=")">
+            #{namespaceId, jdbcType=VARCHAR}
+        </foreach>
+    </select>
+
     <select id="selectBySelectorNameAndPluginName" resultType="org.apache.shenyu.admin.model.entity.DiscoveryDO">
         SELECT
         d.id,
diff --git a/shenyu-admin/src/main/resources/mappers/meta-data-sqlmap.xml b/shenyu-admin/src/main/resources/mappers/meta-data-sqlmap.xml
index 9ee291b3bf13..91a2fb6edbc3 100644
--- a/shenyu-admin/src/main/resources/mappers/meta-data-sqlmap.xml
+++ b/shenyu-admin/src/main/resources/mappers/meta-data-sqlmap.xml
@@ -102,6 +102,16 @@
         WHERE namespace_id = #{namespaceId, jdbcType=VARCHAR}
     </select>
 
+    <select id="findAllByNamespaceIds" resultMap="BaseResultMap">
+        SElECT
+        <include refid="Base_Column_List"/>
+        FROM meta_data
+        WHERE namespace_id IN
+        <foreach item="namespaceId" collection="namespaceIds" open="(" separator="," close=")">
+            #{namespaceId, jdbcType=VARCHAR}
+        </foreach>
+    </select>
+
 
     <select id="selectByQuery" parameterType="org.apache.shenyu.admin.model.query.MetaDataQuery"
             resultMap="BaseResultMap">
diff --git a/shenyu-admin/src/main/resources/mappers/namespace-plugin-rel-sqlmap.xml b/shenyu-admin/src/main/resources/mappers/namespace-plugin-rel-sqlmap.xml
index 14421f49a444..c566e5cd0efe 100644
--- a/shenyu-admin/src/main/resources/mappers/namespace-plugin-rel-sqlmap.xml
+++ b/shenyu-admin/src/main/resources/mappers/namespace-plugin-rel-sqlmap.xml
@@ -251,6 +251,51 @@
     </delete>
 
     <select id="selectAllByNamespaceId" resultType="org.apache.shenyu.admin.model.vo.NamespacePluginVO">
+        SELECT
+        npr.id as id,
+        npr.namespace_id AS namespaceId,
+        npr.plugin_id AS pluginId,
+        npr.config AS config,
+        npr.sort AS sort,
+        npr.enabled AS enabled,
+        npr.date_created AS dateCreated,
+        npr.date_updated AS dateUpdated,
+        p.role AS role,
+        p.name AS name,
+        p.plugin_jar AS pluginJar
+        FROM namespace_plugin_rel npr
+        LEFT JOIN plugin p ON p.id = npr.plugin_id
+        AND npr.namespace_id=#{namespaceId}
+        ORDER BY
+        sort,
+        npr.id ASC
+    </select>
+
+    <select id="selectAllByNamespaceIds" resultType="org.apache.shenyu.admin.model.vo.NamespacePluginVO">
+        SELECT
+        npr.id as id,
+        npr.namespace_id AS namespaceId,
+        npr.plugin_id AS pluginId,
+        npr.config AS config,
+        npr.sort AS sort,
+        npr.enabled AS enabled,
+        npr.date_created AS dateCreated,
+        npr.date_updated AS dateUpdated,
+        p.role AS role,
+        p.name AS name,
+        p.plugin_jar AS pluginJar
+        FROM namespace_plugin_rel npr
+        LEFT JOIN plugin p ON p.id = npr.plugin_id
+        AND npr.namespace_id IN
+        <foreach item="namespaceId" collection="namespaceIds" open="(" separator="," close=")">
+            #{namespaceId, jdbcType=VARCHAR}
+        </foreach>
+        ORDER BY
+        sort,
+        npr.id ASC
+    </select>
+
+    <select id="selectAll" resultType="org.apache.shenyu.admin.model.vo.NamespacePluginVO">
         SELECT
         npr.id as id,
         npr.namespace_id AS namespaceId,
diff --git a/shenyu-admin/src/main/resources/mappers/rule-sqlmap.xml b/shenyu-admin/src/main/resources/mappers/rule-sqlmap.xml
index 1e26930352d3..79a48d91a9de 100644
--- a/shenyu-admin/src/main/resources/mappers/rule-sqlmap.xml
+++ b/shenyu-admin/src/main/resources/mappers/rule-sqlmap.xml
@@ -143,6 +143,16 @@
         WHERE namespace_id = #{namespaceId, jdbcType=VARCHAR}
     </select>
 
+    <select id="selectAllByNamespaceIds" resultType="org.apache.shenyu.admin.model.entity.RuleDO" resultMap="BaseResultMap">
+        SELECT
+        <include refid="Base_Column_List"/>
+        FROM rule
+        WHERE namespace_id IN
+        <foreach item="namespaceId" collection="namespaceIds" open="(" separator="," close=")">
+            #{namespaceId, jdbcType=VARCHAR}
+        </foreach>
+    </select>
+
     <select id="existed" resultType="java.lang.Boolean">
         SELECT TRUE
           FROM rule
diff --git a/shenyu-admin/src/main/resources/mappers/selector-sqlmap.xml b/shenyu-admin/src/main/resources/mappers/selector-sqlmap.xml
index 3edff2685fe0..96cee1fe85b5 100644
--- a/shenyu-admin/src/main/resources/mappers/selector-sqlmap.xml
+++ b/shenyu-admin/src/main/resources/mappers/selector-sqlmap.xml
@@ -196,6 +196,16 @@
         WHERE namespace_id = #{namespaceId, jdbcType=VARCHAR}
     </select>
 
+    <select id="selectAllByNamespaceIds" resultType="org.apache.shenyu.admin.model.entity.SelectorDO" resultMap="BaseResultMap">
+        SELECT
+        <include refid="Base_Column_List"/>
+        FROM selector
+        WHERE namespace_id IN
+        <foreach item="namespaceId" collection="namespaceIds" open="(" separator="," close=")">
+            #{namespaceId, jdbcType=VARCHAR}
+        </foreach>
+    </select>
+
     <select id="existed" resultType="java.lang.Boolean">
         SELECT true
           FROM selector