diff --git a/i18n/en_US.yaml b/i18n/en_US.yaml
index 69a39c12..85d01f54 100644
--- a/i18n/en_US.yaml
+++ b/i18n/en_US.yaml
@@ -98,6 +98,8 @@ backend:
       not_found:
         other: Report not found.
     tag:
+      already_exist:
+        other: Tag already exists.
       not_found:
         other: Tag not found.
       recommend_tag_not_found:
diff --git a/internal/base/reason/reason.go b/internal/base/reason/reason.go
index a33e33cc..13801cea 100644
--- a/internal/base/reason/reason.go
+++ b/internal/base/reason/reason.go
@@ -44,6 +44,7 @@ const (
 	TagNotContainSynonym             = "error.tag.not_contain_synonym_tags"
 	TagCannotUpdate                  = "error.tag.cannot_update"
 	TagIsUsedCannotDelete            = "error.tag.is_used_cannot_delete"
+	TagAlreadyExist                  = "error.tag.already_exist"
 	RankFailToMeetTheCondition       = "error.rank.fail_to_meet_the_condition"
 	ThemeNotFound                    = "error.theme.not_found"
 	LangNotFound                     = "error.lang.not_found"
diff --git a/internal/controller/tag_controller.go b/internal/controller/tag_controller.go
index bc2a9a5b..70e63d20 100644
--- a/internal/controller/tag_controller.go
+++ b/internal/controller/tag_controller.go
@@ -98,6 +98,42 @@ func (tc *TagController) RemoveTag(ctx *gin.Context) {
 	handler.HandleResponse(ctx, err, nil)
 }
 
+// AddTag add tag
+// @Summary add tag
+// @Description add tag
+// @Tags Tag
+// @Accept json
+// @Produce json
+// @Param data body schema.AddTagReq true "tag"
+// @Success 200 {object} handler.RespBody
+// @Router /answer/api/v1/tag [post]
+func (tc *TagController) AddTag(ctx *gin.Context) {
+	req := &schema.AddTagReq{}
+	if handler.BindAndCheck(ctx, req) {
+		return
+	}
+
+	req.UserID = middleware.GetLoginUserIDFromContext(ctx)
+	canList, err := tc.rankService.CheckOperationPermissions(ctx, req.UserID, []string{
+		permission.TagAdd,
+	})
+	if err != nil {
+		handler.HandleResponse(ctx, err, nil)
+		return
+	}
+	if !canList[0] {
+		handler.HandleResponse(ctx, errors.Forbidden(reason.RankFailToMeetTheCondition), nil)
+		return
+	}
+
+	err = tc.tagCommonService.AddTag(ctx, req)
+	if err != nil {
+		handler.HandleResponse(ctx, err, nil)
+	} else {
+		handler.HandleResponse(ctx, err, nil)
+	}
+}
+
 // UpdateTag update tag
 // @Summary update tag
 // @Description update tag
diff --git a/internal/router/answer_api_router.go b/internal/router/answer_api_router.go
index b2cb22ce..dc3c271d 100644
--- a/internal/router/answer_api_router.go
+++ b/internal/router/answer_api_router.go
@@ -175,6 +175,7 @@ func (a *AnswerAPIRouter) RegisterAnswerAPIRouter(r *gin.RouterGroup) {
 
 	// tag
 	r.GET("/question/tags", a.tagController.SearchTagLike)
+	r.POST("/tag", a.tagController.AddTag)
 	r.PUT("/tag", a.tagController.UpdateTag)
 	r.DELETE("/tag", a.tagController.RemoveTag)
 	r.PUT("/tag/synonym", a.tagController.UpdateTagSynonym)
diff --git a/internal/schema/tag_schema.go b/internal/schema/tag_schema.go
index cc046b37..c5d1c7c1 100644
--- a/internal/schema/tag_schema.go
+++ b/internal/schema/tag_schema.go
@@ -161,6 +161,30 @@ type RemoveTagReq struct {
 	UserID string `json:"-"`
 }
 
+// AddTagReq add tag request
+type AddTagReq struct {
+	// slug_name
+	SlugName string `validate:"required,gt=0,lte=35" json:"slug_name"`
+	// display_name
+	DisplayName string `validate:"required,gt=0,lte=35" json:"display_name"`
+	// original text
+	OriginalText string `validate:"required" json:"original_text"`
+	// parsed text
+	ParsedText string `json:"-"`
+	// user id
+	UserID string `json:"-"`
+}
+
+func (req *AddTagReq) Check() (errFields []*validator.FormErrorField, err error) {
+	req.ParsedText = converter.Markdown2HTML(req.OriginalText)
+	return nil, nil
+}
+
+// AddTagResp add tag response
+type AddTagResp struct {
+	TagID string `json:"tag_id"`
+}
+
 // UpdateTagReq update tag request
 type UpdateTagReq struct {
 	// tag_id
diff --git a/internal/service/tag_common/tag_common.go b/internal/service/tag_common/tag_common.go
index da7ec466..82148b53 100644
--- a/internal/service/tag_common/tag_common.go
+++ b/internal/service/tag_common/tag_common.go
@@ -222,6 +222,27 @@ func (ts *TagCommonService) GetObjectTag(ctx context.Context, objectId string) (
 	return ts.TagFormat(ctx, tagsInfoList)
 }
 
+// AddTag get object tag
+func (ts *TagCommonService) AddTag(ctx context.Context, req *schema.AddTagReq) (err error) {
+	_, exist, err := ts.GetTagBySlugName(ctx, req.SlugName)
+	if err != nil {
+		return err
+	}
+	if exist {
+		return errors.BadRequest(reason.TagAlreadyExist)
+	}
+	tagInfo := &entity.Tag{
+		SlugName:     req.SlugName,
+		DisplayName:  req.DisplayName,
+		OriginalText: req.OriginalText,
+		ParsedText:   req.ParsedText,
+		Status:       entity.TagStatusAvailable,
+		UserID:       req.UserID,
+	}
+	tagList := []*entity.Tag{tagInfo}
+	return ts.tagCommonRepo.AddTagList(ctx, tagList)
+}
+
 // AddTagList get object tag
 func (ts *TagCommonService) AddTagList(ctx context.Context, tagList []*entity.Tag) (err error) {
 	return ts.tagCommonRepo.AddTagList(ctx, tagList)