diff --git a/cpp/CHANGELOG.md b/cpp/CHANGELOG.md
index feafe74a64..34d80abbbf 100644
--- a/cpp/CHANGELOG.md
+++ b/cpp/CHANGELOG.md
@@ -24,6 +24,7 @@ Please mark all change in change log and use the ticket from JIRA.
 
 - MS-32 - Fix thrift error
 - MS-34 - Fix prometheus-cpp thirdparty
+- MS-67 - Fix license check bug
 
 ## Improvement
 
diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 7362dc7597..a1b78571f8 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -82,10 +82,10 @@ endif()
 
 if(CMAKE_BUILD_TYPE STREQUAL "Release")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3 -fPIC -DELPP_THREAD_SAFE -fopenmp")
-    # if (GPU_VERSION STREQUAL "ON")
-    #     set(ENABLE_LICENSE "ON")
-    #     add_definitions("-DENABLE_LICENSE")
-    # endif ()
+     if (GPU_VERSION STREQUAL "ON")
+         set(ENABLE_LICENSE "ON")
+         add_definitions("-DENABLE_LICENSE")
+     endif ()
 else()
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O0 -g -fPIC -DELPP_THREAD_SAFE -fopenmp")
 endif()
diff --git a/cpp/src/license/LicenseCheck.cpp b/cpp/src/license/LicenseCheck.cpp
index ca8fb4f930..5f9efe0c38 100644
--- a/cpp/src/license/LicenseCheck.cpp
+++ b/cpp/src/license/LicenseCheck.cpp
@@ -1,5 +1,7 @@
 #include "LicenseCheck.h"
 #include <iostream>
+#include <thread>
+
 #include <boost/archive/binary_oarchive.hpp>
 #include <boost/archive/binary_iarchive.hpp>
 //#include <boost/foreach.hpp>
@@ -7,14 +9,21 @@
 #include <boost/filesystem/path.hpp>
 #include <boost/serialization/map.hpp>
 #include <boost/filesystem/operations.hpp>
+#include <boost/thread.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
 
 
 namespace zilliz {
 namespace vecwise {
 namespace server {
 
+LicenseCheck::LicenseCheck() {
 
-// Part 1:  Legality check
+}
+
+LicenseCheck::~LicenseCheck() {
+    StopCountingDown();
+}
 
 ServerError
 LicenseCheck::LegalityCheck(const std::string &license_file_path) {
@@ -69,14 +78,16 @@ LicenseCheck::AlterFile(const std::string &license_file_path,
                         const boost::system::error_code &ec,
                         boost::asio::deadline_timer *pt) {
 
-    ServerError err = LegalityCheck(license_file_path);
-    if(err!=SERVER_SUCCESS)
-    {
+    ServerError err = LicenseCheck::LegalityCheck(license_file_path);
+    if(err!=SERVER_SUCCESS) {
+        printf("license file check error\n");
         exit(1);
     }
+
     printf("---runing---\n");
     pt->expires_at(pt->expires_at() + boost::posix_time::hours(1));
-    pt->async_wait(boost::bind(AlterFile, license_file_path, boost::asio::placeholders::error, pt));
+    pt->async_wait(boost::bind(LicenseCheck::AlterFile, license_file_path, boost::asio::placeholders::error, pt));
+
     return SERVER_SUCCESS;
 
 }
@@ -84,11 +95,34 @@ LicenseCheck::AlterFile(const std::string &license_file_path,
 ServerError
 LicenseCheck::StartCountingDown(const std::string &license_file_path) {
 
-    if (!LicenseLibrary::IsFileExistent(license_file_path)) return SERVER_LICENSE_FILE_NOT_EXIST;
-    boost::asio::io_service io;
-    boost::asio::deadline_timer t(io, boost::posix_time::hours(1));
-    t.async_wait(boost::bind(AlterFile, license_file_path, boost::asio::placeholders::error, &t));
-    io.run();
+    if (!LicenseLibrary::IsFileExistent(license_file_path)) {
+        printf("license file not exist\n");
+        exit(1);
+    }
+
+    //create a thread to run AlterFile
+    if(counting_thread_ == nullptr) {
+        counting_thread_ = std::make_shared<std::thread>([&]() {
+            boost::asio::deadline_timer t(io_service_, boost::posix_time::hours(1));
+            t.async_wait(boost::bind(LicenseCheck::AlterFile, license_file_path, boost::asio::placeholders::error, &t));
+            io_service_.run();//this thread will block here
+        });
+    }
+
+    return SERVER_SUCCESS;
+}
+
+ServerError
+LicenseCheck::StopCountingDown() {
+    if(!io_service_.stopped()) {
+        io_service_.stop();
+    }
+
+    if(counting_thread_ != nullptr) {
+        counting_thread_->join();
+        counting_thread_ = nullptr;
+    }
+
     return SERVER_SUCCESS;
 }
 
diff --git a/cpp/src/license/LicenseCheck.h b/cpp/src/license/LicenseCheck.h
index 9a22f57f5a..c660f345b4 100644
--- a/cpp/src/license/LicenseCheck.h
+++ b/cpp/src/license/LicenseCheck.h
@@ -4,40 +4,44 @@
 #include "LicenseLibrary.h"
 
 #include <boost/asio.hpp>
-#include <boost/thread.hpp>
-#include <boost/date_time/posix_time/posix_time.hpp>
 
+#include <thread>
+#include <memory>
 
 namespace zilliz {
 namespace vecwise {
 namespace server {
 
 class LicenseCheck {
- public:
+private:
+    LicenseCheck();
+    ~LicenseCheck();
+
+public:
     static LicenseCheck &
     GetInstance() {
         static LicenseCheck instance;
         return instance;
     };
 
-
-    // Part 1:  Legality check
     static ServerError
     LegalityCheck(const std::string &license_file_path);
 
+    ServerError
+    StartCountingDown(const std::string &license_file_path);
 
-    // Part 2: Timing check license
+    ServerError
+    StopCountingDown();
+
+private:
     static ServerError
     AlterFile(const std::string &license_file_path,
               const boost::system::error_code &ec,
               boost::asio::deadline_timer *pt);
 
-
-    static ServerError
-    StartCountingDown(const std::string &license_file_path);
-
- private:
-
+private:
+    boost::asio::io_service io_service_;
+    std::shared_ptr<std::thread> counting_thread_;
 
 };
 
diff --git a/cpp/src/server/Server.cpp b/cpp/src/server/Server.cpp
index 5829f3e6a1..8480c2450c 100644
--- a/cpp/src/server/Server.cpp
+++ b/cpp/src/server/Server.cpp
@@ -159,15 +159,13 @@ Server::Start() {
             ConfigNode license_config = config.GetConfig(CONFIG_LICENSE);
             std::string license_file_path = license_config.GetValue(CONFIG_LICENSE_PATH);
             SERVER_LOG_INFO << "License path: " << license_file_path;
+
             if(server::LicenseCheck::LegalityCheck(license_file_path) != SERVER_SUCCESS) {
                 SERVER_LOG_ERROR << "License check failed";
                 exit(1);
             }
 
-            if(server::LicenseCheck::StartCountingDown(license_file_path) != SERVER_SUCCESS) {
-                SERVER_LOG_ERROR << "License counter start error";
-                exit(1);
-            }
+            server::LicenseCheck::GetInstance().StartCountingDown(license_file_path);
 #endif
 
             // Handle Signal
@@ -217,6 +215,9 @@ Server::Stop() {
 
     StopService();
 
+#ifdef ENABLE_LICENSE
+    server::LicenseCheck::GetInstance().StopCountingDown();
+#endif
 
     SERVER_LOG_INFO << "Vecwise server closed";
 }