diff --git a/src/inc/taos.h b/src/inc/taos.h
index 5cb0420fe2e8a19d07bc08ebc89fccfc2af968d6..138fdde458a219582af5e4c073326488668fa47c 100644
--- a/src/inc/taos.h
+++ b/src/inc/taos.h
@@ -110,7 +110,7 @@ DLL_EXPORT TAOS *taos_connect(const char *ip, const char *user, const char *pass
 DLL_EXPORT TAOS *taos_connect_auth(const char *ip, const char *user, const char *auth, const char *db, uint16_t port);
 DLL_EXPORT void  taos_close(TAOS *taos);
 
-const char *taos_data_type(int type);
+DLL_EXPORT const char *taos_data_type(int type);
 
 typedef struct TAOS_BIND {
   int            buffer_type;
diff --git a/src/inc/taoserror.h b/src/inc/taoserror.h
index 011da975c906323ece5526b853f45e404e03b327..29a9e52c07c900ead2381c695ddac8a26d904045 100644
--- a/src/inc/taoserror.h
+++ b/src/inc/taoserror.h
@@ -29,9 +29,15 @@ extern "C" {
 #define TAOS_SUCCEEDED(err)                 ((err) >= 0)
 #define TAOS_FAILED(err)                    ((err) < 0)
 
-const char* tstrerror(int32_t err);
+#ifdef _TD_GO_DLL_
+  #define DLL_EXPORT    __declspec(dllexport)
+#else
+  #define DLL_EXPORT 
+#endif
+
+DLL_EXPORT const char* tstrerror(int32_t err);
 
-int32_t* taosGetErrno();
+DLL_EXPORT int32_t* taosGetErrno();
 #define terrno                              (*taosGetErrno())
 
 #define TSDB_CODE_SUCCESS                   0