diff --git a/cmd/main.go b/cmd/main.go
index 730875e..1d98501 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -644,16 +644,28 @@ func main() {
 		460716,
 	}
 
-	outfilePath := "/app/dataprep/outfile.txt"
-	outfile, err := os.OpenFile(outfilePath, os.O_WRONLY|os.O_CREATE, 0666)
+	outfile1, err := os.OpenFile("/app/dataprep/outfile1.txt", os.O_WRONLY|os.O_CREATE, 0666)
 	if err != nil {
 		fmt.Printf("Open File Err : %v", err)
 	}
-	defer outfile.Close()
-	writer := bufio.NewWriter(outfile)
+	defer outfile1.Close()
+	writer1 := bufio.NewWriter(outfile1)
+
+	outfile2, err := os.OpenFile("/app/dataprep/outfile2.txt", os.O_WRONLY|os.O_CREATE, 0666)
+	if err != nil {
+		fmt.Printf("Open File Err : %v", err)
+	}
+	defer outfile2.Close()
+	writer2 := bufio.NewWriter(outfile2)
 
 	midss := [][]int64{mids1, mids2}
-	for _, mids := range midss {
+	for i, mids := range midss {
+		var writer *bufio.Writer
+		if i == 0 {
+			writer = writer1
+		} else {
+			writer = writer2
+		}
 		accounts, err := client.GetAccountListByMids(ctx, mids)
 		if err != nil {
 			fmt.Printf("GetAccountListByMids fail, err :%v\n", err)