diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8f689ded5668970b03b39fdce756a5027044298f..ef1bccda3d2820d9a2e15b495f51a613ba40526e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -47,7 +47,6 @@ if(WIN32)
   include_directories(../libdap/src/win32/)
   include_directories(../3rdparty/libmemcached/)
   include_directories(../3rdparty/libmemcached/win32/)
-  include_directories(../3rdparty/wepoll/include/)
   include_directories(../3rdparty/uthash/src/)
   include_directories(../3rdparty/libjson-c/)
   include_directories(../3rdparty/curl/include/)
diff --git a/dap_chain_net.c b/dap_chain_net.c
index 54b24eb00d3565703f6be75ea435ae2ae96e32ef..0863ab60468d4ef97a4c9b128e499afcbd806bf8 100644
--- a/dap_chain_net.c
+++ b/dap_chain_net.c
@@ -38,14 +38,11 @@
 #endif
 
 #ifdef WIN32
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #endif
 
 #include <pthread.h>
diff --git a/dap_chain_node.c b/dap_chain_node.c
index 1fb9ae970c2cd5b2eda0b3bc9e9e4cfe6385f54c..790b627340eec20b503ee059c6491ea1e4aeb0a1 100644
--- a/dap_chain_node.c
+++ b/dap_chain_node.c
@@ -28,14 +28,11 @@
 #include <string.h>
 
 #ifdef WIN32
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #include <pthread.h>
 #else
 #include <sys/socket.h>
diff --git a/dap_chain_node_cli.c b/dap_chain_node_cli.c
index fb50694a15f3f002d9580cb2ff5fcb38bcb976ff..063e73a093449449582e566aa7358cc1a840d99c 100644
--- a/dap_chain_node_cli.c
+++ b/dap_chain_node_cli.c
@@ -46,14 +46,11 @@ typedef int SOCKET;
 #define INVALID_SOCKET  -1  // for win32 =  (SOCKET)(~0)
 // for Windows
 #else
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #endif
 
 #include <pthread.h>
diff --git a/dap_chain_node_cli_cmd.c b/dap_chain_node_cli_cmd.c
index 8ae4d435ec1287844df1348ff3611867331300a7..59df5b3a73ee2d8fee860f93940bc4b5bd1bdff9 100644
--- a/dap_chain_node_cli_cmd.c
+++ b/dap_chain_node_cli_cmd.c
@@ -37,14 +37,11 @@
 #include <dirent.h>
 
 #ifdef WIN32
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #include <pthread.h>
 #else
 #include <sys/types.h>
diff --git a/dap_chain_node_client.c b/dap_chain_node_client.c
index 0ece420862ece432ad250fe4330e35a779efa46e..53b815308df211f71ead06d539eaa028b157001f 100644
--- a/dap_chain_node_client.c
+++ b/dap_chain_node_client.c
@@ -31,14 +31,11 @@
 #include <string.h>
 
 #ifdef WIN32
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #include <pthread.h>
 #endif
 
diff --git a/dap_chain_node_remote.c b/dap_chain_node_remote.c
index 515d1123b8f99cb0effe8f4c77fb3fad138a2a1c..cabf4dd34e4b5e07bcf67b93169b5a38f6a54636 100644
--- a/dap_chain_node_remote.c
+++ b/dap_chain_node_remote.c
@@ -28,14 +28,11 @@
 #include <pthread.h>
 
 #ifdef WIN32
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
 #include <ws2tcpip.h>
 #include <io.h>
-#include <wepoll.h>
 #endif
 
 #include "uthash.h"