diff --git a/importfunc/import_user_id_map.go b/importfunc/import_user_id_map.go
index a590dff..f6ce888 100644
--- a/importfunc/import_user_id_map.go
+++ b/importfunc/import_user_id_map.go
@@ -22,49 +22,46 @@ func ImportUserIdMap() {
 	}
 	ctx := context.Background()
 
-	userIdSeq, err := mcli.GetUserIdImportSeq(ctx)
-	if err != nil {
-		fmt.Printf("GetUserIdImportSeq fail : %v", err)
-		return
-	}
-
-	pathurl := fmt.Sprintf("/app/data_prep/file/user_id_map%v.txt", userIdSeq.Seq)
-
-	fmt.Printf("Importing %dth", userIdSeq.Seq)
-	infile, err := os.Open(pathurl)
-	if err != nil {
-		fmt.Printf("Open File Err : %v", err)
-	}
-	reader := bufio.NewReader(infile)
-	userIdMaps := make([]*dbstruct.UserIdMap, 0)
-	for {
-		str, err := reader.ReadString('\n')
-		if len(str) == 0 {
-			continue
-		}
-		strs := strings.Split(str, ":")
-		seq, _ := strconv.Atoi(strs[0])
-		userId, _ := strconv.Atoi(strs[1])
-		userIdMaps = append(userIdMaps, &dbstruct.UserIdMap{
-			Seq:    int64(seq),
-			UserId: int64(userId),
-		})
-		if len(userIdMaps) == 1000 {
-			err := mcli.CreateMappedUserIds(ctx, userIdMaps)
+	for i := 0; i < 100; i++ {
+		pathurl := fmt.Sprintf("/app/data_prep/file/user_id_map%v.txt", i)
+		go func(i int) {
+			fmt.Printf("Importing %dth", i)
+			infile, err := os.Open(pathurl)
 			if err != nil {
-				fmt.Printf("CreateMappedUserIds err :%v", err)
+				fmt.Printf("Open File Err : %v", err)
 			}
-		}
-		if err == io.EOF {
-			err := mcli.CreateMappedUserIds(ctx, userIdMaps)
-			if err != nil {
-				fmt.Printf("CreateMappedUserIds err :%v", err)
+			reader := bufio.NewReader(infile)
+			userIdMaps := make([]*dbstruct.UserIdMap, 0)
+			for {
+				str, err := reader.ReadString('\n')
+				if len(str) == 0 {
+					continue
+				}
+				strs := strings.Split(str, ":")
+				seq, _ := strconv.Atoi(strs[0])
+				userId, _ := strconv.Atoi(strs[1])
+				userIdMaps = append(userIdMaps, &dbstruct.UserIdMap{
+					Seq:    int64(seq),
+					UserId: int64(userId),
+				})
+				if len(userIdMaps) == 1000 {
+					err := mcli.CreateMappedUserIds(ctx, userIdMaps)
+					if err != nil {
+						fmt.Printf("CreateMappedUserIds err :%v", err)
+					}
+				}
+				if err == io.EOF {
+					err := mcli.CreateMappedUserIds(ctx, userIdMaps)
+					if err != nil {
+						fmt.Printf("CreateMappedUserIds err :%v", err)
+					}
+					break
+				}
 			}
-			break
-		}
+			infile.Close()
+			fmt.Printf("%dth imported", i)
+		}(i)
 	}
-	infile.Close()
-	fmt.Printf("%dth imported", userIdSeq.Seq)
 
 	fmt.Printf("Import into test success")
 }