diff --git a/server/api/region.go b/server/api/region.go
index a5c6e1375a33..d9cce69d429a 100644
--- a/server/api/region.go
+++ b/server/api/region.go
@@ -559,7 +559,7 @@ func (h *regionsHandler) GetTopSize(w http.ResponseWriter, r *http.Request) {
 }
 
 // @Tags region
-// @Summary Improve regions scheduling priority in given range
+// @Summary Accelerate regions scheduling priority in given range
 // @Accept json
 // @Param body body object true "json params"
 // @Produce json
@@ -567,8 +567,8 @@ func (h *regionsHandler) GetTopSize(w http.ResponseWriter, r *http.Request) {
 // @Produce json
 // @Success 200 {object} string "The regions in given range have been improve schedule priority"
 // @Failure 400 {string} string "The input is invalid."
-// @Router /regions/keys/improve-schedule [post]
-func (h *regionsHandler) ImproveRegionsSchedulePriorityInRange(w http.ResponseWriter, r *http.Request) {
+// @Router /regions/keys/accelerate-schedule [post]
+func (h *regionsHandler) AccelerateRegionsSchedulePriorityInRange(w http.ResponseWriter, r *http.Request) {
 	rc := getCluster(r.Context())
 	var input map[string]interface{}
 	if err := apiutil.ReadJSONRespondError(h.rd, w, r.Body, &input); err != nil {
diff --git a/server/api/region_test.go b/server/api/region_test.go
index 58ac4453ea4a..e5a3d7634660 100644
--- a/server/api/region_test.go
+++ b/server/api/region_test.go
@@ -266,7 +266,7 @@ func (s *testRegionSuite) TestImproveRegionsSchedulePriorityInRange(c *C) {
 	r3 := newTestRegionInfo(3, 1, []byte("c"), []byte("d"), core.SetWrittenBytes(500), core.SetReadBytes(800), core.SetRegionConfVer(3), core.SetRegionVersion(2))
 	mustRegionHeartbeat(c, s.svr, r3)
 
-	err := postJSON(testDialClient, fmt.Sprintf("%s/regions/keys/improve-schedule", s.urlPrefix), []byte(`{"start_key":"b", "end_key": "d"}`))
+	err := postJSON(testDialClient, fmt.Sprintf("%s/regions/keys/accelerate-schedule", s.urlPrefix), []byte(`{"start_key":"b", "end_key": "d"}`))
 	c.Assert(err, IsNil)
 }
 
diff --git a/server/api/router.go b/server/api/router.go
index b1ca2af9b489..5be0e79e502d 100644
--- a/server/api/router.go
+++ b/server/api/router.go
@@ -148,7 +148,7 @@ func createRouter(ctx context.Context, prefix string, svr *server.Server) *mux.R
 	clusterRouter.HandleFunc("/regions/check/hist-size", regionsHandler.GetSizeHistogram).Methods("GET")
 	clusterRouter.HandleFunc("/regions/check/hist-keys", regionsHandler.GetKeysHistogram).Methods("GET")
 	clusterRouter.HandleFunc("/regions/sibling/{id}", regionsHandler.GetRegionSiblings).Methods("GET")
-	clusterRouter.HandleFunc("/regions/keys/improve-schedule", regionsHandler.ImproveRegionsSchedulePriorityInRange).Methods("POST")
+	clusterRouter.HandleFunc("/regions/keys/accelerate-schedule", regionsHandler.AccelerateRegionsSchedulePriorityInRange).Methods("POST")
 
 	apiRouter.Handle("/version", newVersionHandler(rd)).Methods("GET")
 	apiRouter.Handle("/status", newStatusHandler(svr, rd)).Methods("GET")