diff --git a/network/netmanager/BUILD.gn b/network/netmanager/BUILD.gn
index 339128a891e1f4a9ddefb86af94878ae759a4939..58b01841b903df0f681e285a6417e310dfe0a18f 100644
--- a/network/netmanager/BUILD.gn
+++ b/network/netmanager/BUILD.gn
@@ -20,10 +20,16 @@ ohos_ndk_library("libnet_connection") {
   ndk_description_file = "./libnet_connection.ndk.json"
   min_compact_version = "1"
   system_capability = "SystemCapability.Communication.NetManager.Core"
-  system_capability_headers = [ "./include/net_connection.h" ]
+  system_capability_headers = [
+    "network/netmanager/net_connection.h",
+    "network/netmanager/net_connection_type.h",
+  ]
 }
 
 ohos_ndk_headers("netconn_header") {
   dest_dir = "$ndk_headers_out_dir/network/netmanager"
-  sources = [ "./include/net_connection.h" ]
+  sources = [
+    "include/net_connection.h",
+    "include/net_connection_type.h",
+  ]
 }
diff --git a/network/netmanager/include/net_connection.h b/network/netmanager/include/net_connection.h
index a1b069d78dba62c881f4ede61efc0ee2a845d394..02b937057deb6bc65db3c670e003fba0be04435d 100644
--- a/network/netmanager/include/net_connection.h
+++ b/network/netmanager/include/net_connection.h
@@ -39,6 +39,8 @@
 
 #include <netdb.h>
 
+#include "net_connection_type.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -75,6 +77,47 @@ int32_t OH_NetConn_GetAddrInfo(char *host, char *serv, struct addrinfo *hint, st
 */
 int32_t OH_NetConn_FreeDnsResult(struct addrinfo *res);
 
+/**
+ * @brief Queries all activated data networks.
+ *
+ * @param netHandleList Network handle that stores the network ID list.
+ * @return 0 - Success. 201 - Missing permissions.
+ *         401 - Parameter error. 2100002 - Unable to connect to service.
+ *         2100003 - Internal error.
+ * @permission ohos.permission.GET_NETWORK_INFO
+ * @syscap SystemCapability.Communication.NetManager.Core
+ * @since 11
+ * @version 1.0
+ */
+int32_t OH_NetConn_GetAllNets(OH_NetConn_NetHandleList *netHandleList);
+
+/**
+ * @brief Registers a custom DNS resolver.
+ *
+ * @param resolver Pointer to the custom DNS resolver.
+ * @return 0 - Success. 201 - Missing permissions.
+ *         401 - Parameter error. 2100002 - Unable to connect to service.
+ *         2100003 - Internal error.
+ * @permission ohos.permission.INTERNET
+ * @syscap SystemCapability.Communication.NetManager.Core
+ * @since 11
+ * @version 1.0
+*/
+int32_t OHOS_NetConn_RegisterDnsResolver(OH_NetConn_CustomDnsResolver resolver);
+
+/**
+ * @brief Unregisters a custom DNS resolver.
+ *
+ * @return 0 - Success. 201 - Missing permissions.
+ *         401 - Parameter error. 2100002 - Unable to connect to service.
+ *         2100003 - Internal error.
+ * @permission ohos.permission.INTERNET
+ * @syscap SystemCapability.Communication.NetManager.Core
+ * @since 11
+ * @version 1.0
+*/
+int32_t OHOS_NetConn_UnregisterDnsResolver(void);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/network/netmanager/include/net_connection_type.h b/network/netmanager/include/net_connection_type.h
new file mode 100644
index 0000000000000000000000000000000000000000..17cfc24eb63eeb7b3c317edcb9e7a97ad3552379
--- /dev/null
+++ b/network/netmanager/include/net_connection_type.h
@@ -0,0 +1,91 @@
+/*
+* Copyright (c) 2023 Huawei Device Co., Ltd.
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#ifndef NATIVE_NET_CONN_TYPE_H
+#define NATIVE_NET_CONN_TYPE_H
+
+/**
+* @addtogroup NetConnection
+* @{
+*
+* @brief Provides the data structures for the C APIs of the network connection module for network management.
+*
+* @since 11
+* @version 1.0
+*/
+
+/**
+* @file net_connection_type.h
+* @brief Defines the data structures for the C APIs of the network connection module.
+*
+* @library libnet_connection.so
+* @syscap SystemCapability.Communication.NetManager.Core
+* @since 11
+* @version 1.0
+*
+*/
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define OH_NETCONN_MAX_NET_SIZE 32
+
+/**
+* @brief Defines the network handle.
+*
+* @since 11
+* @version 1.0
+*/
+typedef struct OH_NetConn_NetHandle {
+    /** Network ID */
+    int32_t netId;
+} OH_NetConn_NetHandle;
+
+/**
+* @brief Defines the network handle list.
+*
+* @since 11
+* @version 1.0
+*/
+typedef struct OH_NetConn_NetHandleList {
+    /** Network handle list */
+    OH_NetConn_NetHandle netHandles[OH_NETCONN_MAX_NET_SIZE];
+    /** Actual size of the network handle list */
+    int32_t netHandleListSize;
+} OH_NetConn_NetHandleList;
+
+/*
+ * @brief Pointer to the custom DNS resolver.
+ *
+ * @param host The host name to query.
+ * @param serv Service name.
+ * @param hint Pointer to the addrinfo structure.
+ * @param res Store DNS query results and return them in a linked list format.
+ *
+ * @since 11
+ * @version 1.0
+ */
+typedef int (*OH_NetConn_CustomDnsResolver)(const char *host, const char *serv,
+    const struct addrinfo *hint, struct addrinfo **res);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+#endif /* NATIVE_NET_CONN_TYPE_H */
\ No newline at end of file
diff --git a/network/netmanager/libnet_connection.ndk.json b/network/netmanager/libnet_connection.ndk.json
index 2c5ac35b01057bf0db84f462c2f4ec819acc31c3..fdac6cc66ef22f54b6acd69066b87c89a410ff5e 100644
--- a/network/netmanager/libnet_connection.ndk.json
+++ b/network/netmanager/libnet_connection.ndk.json
@@ -1,10 +1,22 @@
 [
     {
-        "first_introdeced":"11",
+        "first_introduced": "11",
         "name": "OH_NetConn_GetAddrInfo"
     },
     {
-        "first_introdeced":"11",
+        "first_introduced": "11",
         "name": "OH_NetConn_FreeDnsResult"
+    },
+    {
+        "first_introduced": "11",
+        "name": "OH_NetConn_GetAllNets"
+    },
+    {
+        "first_introduced": "11",
+        "name": "OHOS_NetConn_RegisterDnsResolver"
+    },
+    {
+        "first_introduced": "11",
+        "name": "OHOS_NetConn_UnregisterDnsResolver"
     }
-]
\ No newline at end of file
+]