diff --git a/server/api/resource.go b/server/api/resource.go
index a6d1450..8dbde5e 100644
--- a/server/api/resource.go
+++ b/server/api/resource.go
@@ -298,6 +298,47 @@ func handleGetCharactersFromVndb(c fiber.Ctx) error {
 	})
 }
 
+func handleUpdateCharacterImage(c fiber.Ctx) error {
+	resourceIdStr := c.Params("resourceId")
+	characterIdStr := c.Params("characterId")
+	if resourceIdStr == "" || characterIdStr == "" {
+		return model.NewRequestError("Resource ID and Character ID are required")
+	}
+	resourceId, err := strconv.Atoi(resourceIdStr)
+	if err != nil {
+		return model.NewRequestError("Invalid resource ID")
+	}
+	characterId, err := strconv.Atoi(characterIdStr)
+	if err != nil {
+		return model.NewRequestError("Invalid character ID")
+	}
+	
+	var params struct {
+		ImageID uint `json:"image_id"`
+	}
+	body := c.Body()
+	err = json.Unmarshal(body, &params)
+	if err != nil {
+		return model.NewRequestError("Invalid request body")
+	}
+	
+	uid, ok := c.Locals("uid").(uint)
+	if !ok {
+		return model.NewUnAuthorizedError("You must be logged in to update a character")
+	}
+	
+	err = service.UpdateCharacterImage(uid, uint(resourceId), uint(characterId), params.ImageID)
+	if err != nil {
+		return err
+	}
+	
+	return c.Status(fiber.StatusOK).JSON(model.Response[any]{
+		Success: true,
+		Data:    nil,
+		Message: "Character image updated successfully",
+	})
+}
+
 func AddResourceRoutes(api fiber.Router) {
 	resource := api.Group("/resource")
 	{
@@ -312,5 +353,6 @@ func AddResourceRoutes(api fiber.Router) {
 		resource.Get("/tag/:tag", handleListResourcesWithTag)
 		resource.Get("/user/:username", handleGetResourcesWithUser)
 		resource.Post("/:id", handleUpdateResource)
+		resource.Put("/:resourceId/character/:characterId/image", handleUpdateCharacterImage)
 	}
 }
diff --git a/server/dao/resource.go b/server/dao/resource.go
index 31cf933..802b29f 100644
--- a/server/dao/resource.go
+++ b/server/dao/resource.go
@@ -517,3 +517,15 @@ func CountResources() (int64, error) {
 	}
 	return count, nil
 }
+
+// UpdateCharacterImage 更新角色的图片ID
+func UpdateCharacterImage(characterID, imageID uint) error {
+	result := db.Model(&model.Character{}).Where("id = ?", characterID).Update("image_id", imageID)
+	if result.Error != nil {
+		return result.Error
+	}
+	if result.RowsAffected == 0 {
+		return model.NewNotFoundError("Character not found")
+	}
+	return nil
+}
diff --git a/server/service/resource.go b/server/service/resource.go
index e6ba48d..1b7f5c4 100644
--- a/server/service/resource.go
+++ b/server/service/resource.go
@@ -763,3 +763,33 @@ func downloadAndCreateImage(imageURL string) (uint, error) {
 
 	return imageID, nil
 }
+
+// UpdateCharacterImage 更新角色的图片ID
+func UpdateCharacterImage(uid, resourceID, characterID, imageID uint) error {
+	// 检查资源是否存在并且用户有权限修改
+	resource, err := dao.GetResourceByID(resourceID)
+	if err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return model.NewNotFoundError("Resource not found")
+		}
+		return err
+	}
+
+	isAdmin, err := CheckUserIsAdmin(uid)
+	if err != nil {
+		return err
+	}
+
+	// 检查用户是否有权限修改这个资源
+	if resource.UserID != uid && !isAdmin {
+		return model.NewUnAuthorizedError("You don't have permission to modify this resource")
+	}
+
+	// 更新角色图片
+	err = dao.UpdateCharacterImage(characterID, imageID)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}