diff --git a/app/api/controller/create_user.go b/app/api/controller/create_user.go
index 61d3620..26981e0 100644
--- a/app/api/controller/create_user.go
+++ b/app/api/controller/create_user.go
@@ -1,6 +1,7 @@
 package controller
 
 import (
+	"fmt"
 	"net/http"
 
 	"github.com/YKhm20020/Backend-Tacktail/usecase"
@@ -21,6 +22,7 @@ func (con CreateUser) Execute(ctx *gin.Context) {
 	var input usecase.CreateUserInput
 
 	if err := ctx.ShouldBindJSON(&input); err != nil {
+		fmt.Println("should bind json でエラー発生: ", err)
 		ctx.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 		return
 	}
@@ -29,6 +31,7 @@ func (con CreateUser) Execute(ctx *gin.Context) {
 
 	if err != nil {
 		if err.Error() == "this name is already registered" {
+			fmt.Println("this name is already registeredでエラー発生: ", err)
 			ctx.JSON(http.StatusBadRequest, gin.H{"error": "This name is already registered"})
 			return
 		}