diff --git a/server/tag.go b/server/tag.go
index f8ac6e0d..d7824226 100644
--- a/server/tag.go
+++ b/server/tag.go
@@ -12,6 +12,8 @@ import (
 	"github.com/labstack/echo/v4"
 )
 
+var tagRegexp = regexp.MustCompile(`#([^\s#]+?) `)
+
 func (s *Server) registerTagRoutes(g *echo.Group) {
 	g.GET("/tag", func(c echo.Context) error {
 		ctx := c.Request().Context()
@@ -47,13 +49,9 @@ func (s *Server) registerTagRoutes(g *echo.Group) {
 
 		tagMapSet := make(map[string]bool)
 
-		r := regexp.MustCompile(`#([^\s#]+?) `)
-		if err != nil {
-			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to compile regexp").SetInternal(err)
-		}
 		for _, memo := range memoList {
-			for _, rawTag := range r.FindAllString(memo.Content, -1) {
-				tag := r.ReplaceAllString(rawTag, "$1")
+			for _, rawTag := range tagRegexp.FindAllString(memo.Content, -1) {
+				tag := tagRegexp.ReplaceAllString(rawTag, "$1")
 				tagMapSet[tag] = true
 			}
 		}
diff --git a/web/src/helpers/marked.ts b/web/src/helpers/marked.ts
index 28acd1cd..01c35548 100644
--- a/web/src/helpers/marked.ts
+++ b/web/src/helpers/marked.ts
@@ -18,8 +18,6 @@ export const MEMO_LINK_REG = /@\[(.+?)\]\((.+?)\)/g;
 
 const parseMarkedToHtml = (markedStr: string): string => {
   const htmlText = markedStr
-    .replace(/([\u4e00-\u9fa5])([A-Za-z0-9?.,;[\]]+)/g, "$1 $2")
-    .replace(/([A-Za-z0-9?.,;[\]]+)([\u4e00-\u9fa5])/g, "$1 $2")
     .replace(CODE_BLOCK_REG, "<pre lang=''>$1</pre>")
     .replace(TODO_BLOCK_REG, "<span class='todo-block todo' data-value='TODO'></span>")
     .replace(DONE_BLOCK_REG, "<span class='todo-block done' data-value='DONE'>✓</span>")