diff --git a/internal/api/problem/update.go b/internal/api/problem/update.go
index 1070023..a45e9d4 100644
--- a/internal/api/problem/update.go
+++ b/internal/api/problem/update.go
@@ -10,8 +10,8 @@ import (
 
 type updateRequest struct {
 	Pid       uint   `form:"pid"        json:"pid"`
-	Title     string `form:"title"      json:"title"      binding:"required"`
-	Statement string `form:"statement"  json:"statement"  binding:"required"`
+	Title     string `form:"title"      json:"title"`
+	Statement string `form:"statement"  json:"statement"`
 	IsEnabled bool   `form:"is_enabled" json:"is_enabled"`
 }
 
@@ -22,8 +22,8 @@ type updateRequest struct {
 // @Accept      application/x-www-form-urlencoded
 // @Produce     json
 // @Param       pid          formData int    false "problem id, 0 for create"
-// @Param       title        formData string true  "title"
-// @Param       statement    formData string true  "statement"
+// @Param       title        formData string false "title"
+// @Param       statement    formData string false "statement"
 // @Param       is_enabled   formData bool   false "is enabled"
 // @Response    200 {object} e.Response[model.Problem] "problem info without provider information"
 // @Security    Authentication
@@ -50,8 +50,13 @@ func (h *handler) Update(c *gin.Context) {
 		return
 	}
 
-	if req.Pid == 0 {
-		// create problem
+	if req.Pid == 0 { // create problem
+		// Title and Statement are required
+		if req.Title == "" || req.Statement == "" {
+			e.Pong[any](c, e.InvalidParameter, nil)
+			return
+		}
+
 		createData := &problem.CreateData{
 			Title:      req.Title,
 			Statement:  req.Statement,
@@ -61,9 +66,7 @@ func (h *handler) Update(c *gin.Context) {
 		p, status := h.problemService.Create(createData)
 		e.Pong(c, status, p)
 		return
-	} else {
-		// update problem
-
+	} else { // update problem
 		// check if problem exists
 		p, status := h.problemService.Query(req.Pid, true, false)
 		if status != e.Success {