diff --git a/actions/common/common.go b/actions/common/common.go
index ba6f2ed..ce0e8f1 100644
--- a/actions/common/common.go
+++ b/actions/common/common.go
@@ -48,13 +48,13 @@ func InitActionsCommonCache() {
 
 	recentCommentsCaches = cache.NewSliceCache[models.WpComments](recentComments, vars.Conf.RecentCommentsCacheTime)
 
-	postCommentCaches = cache.NewMapCacheByFn[uint64, []models.WpComments](postComments, vars.Conf.CommentsCacheTime)
+	postCommentCaches = cache.NewMapCacheByFn[uint64, []models.WpComments](postComments, vars.Conf.PostCommentsCacheTime)
 
 	maxPostIdCache = cache.NewSliceCache[uint64](getMaxPostId, vars.Conf.MaxPostIdCacheTime)
 
 	usersCache = cache.NewMapCacheByBatchFn[uint64, models.WpUsers](getUsers, vars.Conf.UserInfoCacheTime)
 
-	commentsCache = cache.NewMapCacheByBatchFn[uint64, models.WpComments](getCommentByIds, time.Hour)
+	commentsCache = cache.NewMapCacheByBatchFn[uint64, models.WpComments](getCommentByIds, vars.Conf.CommentsCacheTime)
 }
 
 func ClearCache() {
@@ -65,6 +65,7 @@ func ClearCache() {
 	monthPostsCache.ClearExpired()
 	postContextCache.ClearExpired()
 	usersCache.ClearExpired()
+	commentsCache.ClearExpired()
 }
 
 type PostIds struct {
diff --git a/config.example.yaml b/config.example.yaml
index 19494ca..036ed1a 100644
--- a/config.example.yaml
+++ b/config.example.yaml
@@ -36,7 +36,7 @@ monthPostCacheTime: 1h
 # 文档数据缓存时间
 postDataCacheTime: 1h
 # 文章评论缓存时间
-commentsCacheTime: 5m
+postCommentsCacheTime: 5m
 # 定时清理缓存周期时间
 crontabClearCacheTime: 5m
 # 到达指定并发请求数时随机sleep
@@ -51,5 +51,7 @@ singleIpSearchNum: 10
 maxPostIdCacheTime: 1h
 # 用户信息缓存时间
 userInfoCacheTime: 24h
+# 单独评论缓存时间
+commentsCacheTime: 24h
 # Gzip
 gzip: false
diff --git a/rss2/rss2.go b/rss2/rss2.go
index 1120427..9c2efe8 100644
--- a/rss2/rss2.go
+++ b/rss2/rss2.go
@@ -3,6 +3,7 @@ package rss2
 import (
 	"fmt"
 	"github/fthvgb1/wp-go/helper"
+	"strconv"
 	"strings"
 )
 
@@ -38,19 +39,28 @@ var template = `<?xml version="1.0" encoding="UTF-8"?>
 var templateItems = `
 			<item>
                 <title>{$title}</title>
-                <link>{$link}</link>
+                {$link}
 				{$comments}
-                <dc:creator><![CDATA[{$author}]]></dc:creator>
+                {$creator}
                 <pubDate>{$pubDate}</pubDate>
                 {$category}
-                <guid isPermaLink="false">{$guid}</guid>
+                {$guid}
                 {$description}
                 <content:encoded><![CDATA[{$content}]]></content:encoded>
                 {$commentRss}
 				{$commentNumber}
-
             </item>
 `
+var templateReplace = map[string]string{
+	"{$category}":      "<category><![CDATA[%s]]></category>",
+	"{$link}":          "<link>%s</link>",
+	"{$creator}":       "<dc:creator><![CDATA[%s]]></dc:creator>",
+	"{$description}":   "<description><![CDATA[%s]]></description>",
+	"{$comments}":      "<comments>%s</comments>",
+	"{$commentRss}":    "<wfw:commentRss>%s</wfw:commentRss>",
+	"{$commentNumber}": "<slash:comments>%s</slash:comments>",
+	"{$guid}":          "<guid isPermaLink=\"false\">%s</guid>",
+}
 
 type Rss2 struct {
 	Title           string
@@ -103,54 +113,41 @@ func (r Rss2) GetXML() (xml string) {
 func (i Item) GetXml() (xml string) {
 	xml = templateItems
 	for k, v := range map[string]string{
-		"{$title}":         i.Title,
-		"{$link}":          i.Link,
-		"{$comments}":      i.getComments(),
-		"{$author}":        i.Creator,
-		"{$pubDate}":       i.PubDate,
-		"{$category}":      i.getCategory(),
-		"{$guid}":          i.Guid,
-		"{$description}":   i.getDescription(),
-		"{$content}":       i.Content,
-		"{$commentRss}":    i.getCommentRss(),
-		"{$commentNumber}": i.getSlashComments(),
+		"{$title}":   i.Title,
+		"{$pubDate}": i.PubDate,
+		"{$content}": i.Content,
 	} {
 		xml = strings.Replace(xml, k, v, -1)
 	}
-	return
-}
 
-func (i Item) getCategory() string {
-	r := ""
-	if i.Category != "" {
-		r = fmt.Sprintf("<category><![CDATA[%s]]></category>", i.CommentLink)
+	m := map[string]string{
+		"{$category}":    i.Category,
+		"{$link}":        i.Link,
+		"{$creator}":     i.Creator,
+		"{$description}": i.Description,
+		"{$comments}":    i.CommentLink,
+		"{$guid}":        i.Guid,
+		"{$commentRss}":  i.CommentRss,
 	}
-	return r
-}
-func (i Item) getDescription() string {
-	r := ""
-	if i.Description != "" {
-		r = fmt.Sprintf("<description><![CDATA[%s]]></description>", i.Description)
-	}
-	return r
-}
-func (i Item) getComments() string {
-	r := ""
-	if i.CommentLink != "" {
-		r = fmt.Sprintf("<comments>%s</comments>", i.CommentLink)
-	}
-	return r
-}
 
-func (i Item) getCommentRss() (r string) {
-	if i.CommentLink != "" && i.SlashComments > 0 {
-		r = fmt.Sprintf("<wfw:commentRss>%s</wfw:commentRss>", i.CommentRss)
+	if i.CommentRss != "" && i.SlashComments > 0 {
+		m["{$commentRss}"] = i.CommentRss
+	} else {
+		m["{$commentRss}"] = ""
 	}
-	return
-}
-func (i Item) getSlashComments() (r string) {
 	if i.SlashComments > 0 {
-		r = fmt.Sprintf("<slash:comments>%d</slash:comments>", i.SlashComments)
+		m["{$commentNumber}"] = strconv.Itoa(i.SlashComments)
+	} else {
+		m["{$commentNumber}"] = ""
 	}
+
+	for k, v := range m {
+		t := ""
+		if v != "" {
+			t = fmt.Sprintf(templateReplace[k], v)
+		}
+		xml = strings.Replace(xml, k, t, -1)
+	}
+
 	return
 }
diff --git a/vars/config.go b/vars/config.go
index f4fed55..e8e2207 100644
--- a/vars/config.go
+++ b/vars/config.go
@@ -22,7 +22,7 @@ type Config struct {
 	SearchPostCacheTime     time.Duration   `yaml:"searchPostCacheTime"`
 	MonthPostCacheTime      time.Duration   `yaml:"monthPostCacheTime"`
 	PostDataCacheTime       time.Duration   `yaml:"postDataCacheTime"`
-	CommentsCacheTime       time.Duration   `yaml:"commentsCacheTime"`
+	PostCommentsCacheTime   time.Duration   `yaml:"postCommentsCacheTime"`
 	CrontabClearCacheTime   time.Duration   `yaml:"crontabClearCacheTime"`
 	MaxRequestSleepNum      int64           `yaml:"maxRequestSleepNum"`
 	SleepTime               []time.Duration `yaml:"sleepTime"`
@@ -30,6 +30,7 @@ type Config struct {
 	SingleIpSearchNum       int64           `yaml:"singleIpSearchNum"`
 	MaxPostIdCacheTime      time.Duration   `yaml:"maxPostIdCacheTime"`
 	UserInfoCacheTime       time.Duration   `yaml:"userInfoCacheTime"`
+	CommentsCacheTime       time.Duration   `yaml:"commentsCacheTime"`
 	Gzip                    bool            `yaml:"gzip"`
 }