diff --git a/cpp/src/license/License.cpp b/cpp/src/license/License.cpp
index 193a322e50..eb6c563e4f 100644
--- a/cpp/src/license/License.cpp
+++ b/cpp/src/license/License.cpp
@@ -43,7 +43,7 @@ Licensefileread(const std::string& path)
     fileread.open(path,std::ios::in);
     if(!fileread)
     {
-        printf("Can't open file\n");
+        printf("NO License\n");
         return  SERVER_UNEXPECTED_ERROR;
     }
     fileread.close();
diff --git a/cpp/src/license/LicenseCreateTime.cpp b/cpp/src/license/LicenseCreateTime.cpp
index 7683fae24c..0c2f951511 100644
--- a/cpp/src/license/LicenseCreateTime.cpp
+++ b/cpp/src/license/LicenseCreateTime.cpp
@@ -12,10 +12,14 @@
 
 using namespace zilliz::vecwise;
 
+
+
 //TEST(LicenseTest, LICENSE_TEST) {
 //
 //    std::string path1 = "/tmp/vecwise_engine.sha";
 //    std::string path2 = "/tmp/vecwise_engine.license";
+//    std::string path3 = "/tmp/vecwise_engine2.license";
+//
 //    std::cout << "This is create  licenseTime " << std::endl;
 //
 //    server::ServerError err;
@@ -39,13 +43,29 @@ using namespace zilliz::vecwise;
 //    err = server::LiSave(path2,deviceCount,uuidEncryption,RemainingTime);
 //    ASSERT_EQ(err, server::SERVER_SUCCESS);
 //
-//    int64_t  RemainingTimecheck;
-//    std::map<int,std::string> uuidEncryptioncheck;
-//    int deviceCountcheck;
-//    err = server::LiLoad(path2,deviceCountcheck,uuidEncryptioncheck,RemainingTimecheck);
+////    int64_t  RemainingTimecheck;
+////    std::map<int,std::string> uuidEncryptioncheck;
+////    int deviceCountcheck;
+////    err = server::LiLoad(path2,deviceCountcheck,uuidEncryptioncheck,RemainingTimecheck);
+////
+////    printf("\n  deviceCountcheck  = %d\n",deviceCountcheck);
+////    std::cout<< "RemainingTimecheck: "  << RemainingTimecheck<< std::endl;
+//
+//    time_t update_time;
+//    off_t file_size;
+//    std::string filemd5;
+//
+//    server::LicenseGetfiletime(path2,update_time);
+//    ASSERT_EQ(err, server::SERVER_SUCCESS);
+//    server::LicenseGetfilesize(path2,file_size);
+//    ASSERT_EQ(err, server::SERVER_SUCCESS);
+//    server::LicenseGetfilemd5(path2,filemd5);
+//    ASSERT_EQ(err, server::SERVER_SUCCESS);
+//
+//
+//    err = server::LifileSave(path3,update_time,file_size,filemd5);
+//    ASSERT_EQ(err, server::SERVER_SUCCESS);
 //
-//    printf("\n  deviceCountcheck  = %d\n",deviceCountcheck);
-//    std::cout<< "RemainingTimecheck: "  << RemainingTimecheck<< std::endl;
 //    std::cout<< "success"  << std::endl;
 //
-//}
\ No newline at end of file
+//}
diff --git a/cpp/src/license/LicensePublic.cpp b/cpp/src/license/LicensePublic.cpp
index 6534674476..632b4cb73d 100644
--- a/cpp/src/license/LicensePublic.cpp
+++ b/cpp/src/license/LicensePublic.cpp
@@ -223,6 +223,78 @@ LifileLoad(const string& path,time_t& update_time,off_t& file_size,string& filem
         return  SERVER_SUCCESS;
     }
 
+ServerError
+LicenseLegality_check(const std::string& path)
+{
+    int deviceCount;
+    std::vector<std::string> uuids;
+    LicenseGetuuid(deviceCount,uuids);
+
+    std::vector<std::string> shas;
+    LicenseGetuuidsha(deviceCount,uuids,shas);
+
+
+    int deviceCountcheck;
+    std::map<int,std::string> uuidEncryption;
+    int64_t RemainingTime;
+    LiLoad(path,deviceCountcheck,uuidEncryption,RemainingTime);
+
+    if(deviceCount!=deviceCountcheck)
+    {
+        printf("deviceCount is wrong\n");
+        return  SERVER_UNEXPECTED_ERROR;
+    }
+    for(int i=0;i<deviceCount;i++)
+    {
+        if(uuidEncryption[i]!=shas[i])
+        {
+            printf("uuidsha %d is wrong\n",i);
+            return  SERVER_UNEXPECTED_ERROR;
+        }
+    }
+    if(RemainingTime <=0 )
+    {
+        printf("License expired\n");
+        return  SERVER_UNEXPECTED_ERROR;
+    }
+    return SERVER_SUCCESS;
+}
+
+ServerError
+LicenseIntegrity_check(const std::string& path,const std::string& path2)
+{
+    std::string filemd5;
+    LicenseGetfilemd5(path,filemd5);
+    time_t  update_time;
+    LicenseGetfiletime(path,update_time);
+    off_t file_size;
+    LicenseGetfilesize(path,file_size);
+
+    time_t update_timecheck;
+    std::string filemd5check;
+    off_t file_sizecheck;
+    LifileLoad(path2,update_timecheck,file_sizecheck,filemd5check);
+
+    if(filemd5!=filemd5check)
+    {
+        printf("This file has been modified\n");
+        return SERVER_UNEXPECTED_ERROR;
+    }
+    if(update_time!=update_timecheck)
+    {
+        printf("update_time is wrong\n");
+        return  SERVER_UNEXPECTED_ERROR;
+    }
+    if(file_size!=file_sizecheck)
+    {
+        printf("file_size is wrong\n");
+        return  SERVER_UNEXPECTED_ERROR;
+    }
+
+    return SERVER_SUCCESS;
+}
+
+
 
 void Alterfile(const string &path1, const string &path2 ,const boost::system::error_code &ec, boost::asio::deadline_timer* pt)
 {
@@ -233,8 +305,9 @@ void Alterfile(const string &path1, const string &path2 ,const boost::system::er
 
     std::cout<< "RemainingTime: " << RemainingTime <<std::endl;
 
-    if(RemainingTime==0)
+    if(RemainingTime<=0)
     {
+        std::cout<< "License expired" <<std::endl;
         exit(1);
     }
     RemainingTime--;
diff --git a/cpp/src/license/LicensePublic.h b/cpp/src/license/LicensePublic.h
index ea2e439d99..394dc808c8 100644
--- a/cpp/src/license/LicensePublic.h
+++ b/cpp/src/license/LicensePublic.h
@@ -34,12 +34,18 @@ namespace zilliz {
 namespace vecwise {
 namespace server {
 
-class BoostArchive;
-class Licensedata1;
+class
+BoostArchive;
+
+class
+Licensedata1;
 
 
-class Licensefiledata;
-class STLlicensefiledata;
+class
+Licensefiledata;
+
+class
+STLlicensefiledata;
 
 
 ServerError
@@ -57,11 +63,21 @@ LifileLoad(const std::string& path,time_t& update_time,off_t& file_size,std::str
 ServerError
 LiSave(const std::string& path,const int& deviceCount,const std::map<int,std::string>& uuidEncryption, const int64_t& RemainingTime);
 
-void Alterfile(const std::string &path1, const std::string &path2 ,const boost::system::error_code &ec, boost::asio::deadline_timer* pt);
-void Runtime(const std::string &path1, const std::string &path2 );
+ServerError
+LicenseIntegrity_check(const std::string& path,const std::string& path2);
+
+ServerError
+LicenseLegality_check(const std::string& path);
+
+void
+Alterfile(const std::string &path1, const std::string &path2 ,const boost::system::error_code &ec, boost::asio::deadline_timer* pt);
+
+void
+Runtime(const std::string &path1, const std::string &path2 );
+
+
+
 
-//    void Print(const boost::system::error_code &ec,boost::asio::deadline_timer* pt, int * pcount );
-//    void Run();
 
 }
 }
diff --git a/cpp/src/license/LicenseRun.cpp b/cpp/src/license/LicenseRun.cpp
index 660fd5fa0c..a059d2f7e2 100644
--- a/cpp/src/license/LicenseRun.cpp
+++ b/cpp/src/license/LicenseRun.cpp
@@ -10,4 +10,31 @@
 #include "license/LicensePublic.h"
 using namespace zilliz::vecwise;
 
-
+//TEST(LicenseTest, LICENSE_TEST) {
+//
+//    std::string path1 = "/tmp/vecwise_engine.license";
+//    std::string path2 = "/tmp/vecwise_engine2.license";
+//    std::cout << "This is run " << std::endl;
+//
+//    server::ServerError err;
+//
+//    err = server::Licensefileread(path1);
+//    if(err!=server::SERVER_SUCCESS)
+//    {
+//        exit(1);
+//    }
+//    err = server::LicenseIntegrity_check(path1,path2);
+//    if(err!=server::SERVER_SUCCESS)
+//    {
+//        std::cout << "Integrity_check is wrong " << std::endl;
+//        exit(1);
+//    }
+//    err = server::LicenseLegality_check(path1);
+//    if(err!=server::SERVER_SUCCESS)
+//    {
+//        std::cout << "Legality_check is wrong " << std::endl;
+//        exit(1);
+//    }
+//    std::cout << " runing " << std::endl;
+//    server::Runtime(path1,path2);
+//}
\ No newline at end of file
diff --git a/cpp/unittest/license/license_tests.cpp b/cpp/unittest/license/license_tests.cpp
index 4ee6898dd9..3da698c1d1 100644
--- a/cpp/unittest/license/license_tests.cpp
+++ b/cpp/unittest/license/license_tests.cpp
@@ -24,22 +24,26 @@ TEST(LicenseTest, LICENSE_TEST) {
     {
         exit(1);
     }
-
-    int deviceCount=0;
-    std::vector<std::string> uuids;
-
-    err = server::LicenseGetuuid(deviceCount,uuids);
-    ASSERT_EQ(err, server::SERVER_SUCCESS);
-
-    std::vector<std::string> shas;
-    err = server::LicenseGetuuidsha(deviceCount,uuids,shas);
-    ASSERT_EQ(err, server::SERVER_SUCCESS);
-
-    err = server::LicenseSave(path1,deviceCount,shas);
-    ASSERT_EQ(err, server::SERVER_SUCCESS);
-
+    err = server::LicenseIntegrity_check(path1,path2);
+    if(err!=server::SERVER_SUCCESS)
+    {
+        std::cout << "Integrity_check is wrong " << std::endl;
+        exit(1);
+    }
+    err = server::LicenseLegality_check(path1);
+    if(err!=server::SERVER_SUCCESS)
+    {
+        std::cout << "Legality_check is wrong " << std::endl;
+        exit(1);
+    }
+    std::cout << " runing " << std::endl;
+    server::Runtime(path1,path2);
 }
 
+
+
+
+
 //TEST(LicenseTest, LICENSE_TEST) {
 //    std::string path1 = "/tmp/vecwise_engine.license";
 //    std::string path2 = "/tmp/vecwise_engine2.license";