diff --git a/internal/nodes/http_request.go b/internal/nodes/http_request.go
index 5cf9092..bc4b203 100644
--- a/internal/nodes/http_request.go
+++ b/internal/nodes/http_request.go
@@ -928,11 +928,26 @@ func (this *HTTPRequest) Format(source string) string {
 			return ""
 		}
 
-		// os
-		// TODO
-
 		// browser
-		// TODO
+		if prefix == "browser" {
+			var result = stats.SharedUserAgentParser.Parse(this.RawReq.UserAgent())
+			switch suffix {
+			case "os.name":
+				return result.OS.Name
+			case "os.version":
+				return result.OS.Version
+			case "name":
+				return result.BrowserName
+			case "version":
+				return result.BrowserVersion
+			case "isMobile":
+				if result.IsMobile {
+					return "1"
+				} else {
+					return "0"
+				}
+			}
+		}
 
 		return "${" + varName + "}"
 	})
diff --git a/internal/stats/http_request_stat_manager.go b/internal/stats/http_request_stat_manager.go
index 3bab2eb..3a29d27 100644
--- a/internal/stats/http_request_stat_manager.go
+++ b/internal/stats/http_request_stat_manager.go
@@ -29,7 +29,6 @@ type StatItem struct {
 }
 
 var SharedHTTPRequestStatManager = NewHTTPRequestStatManager()
-var sharedUserAgentParser = NewUserAgentParser()
 
 // HTTPRequestStatManager HTTP请求相关的统计
 // 这里的统计是一个辅助统计，注意不要因为统计而影响服务工作性能
@@ -223,8 +222,8 @@ Loop:
 			serverId := userAgentString[:atIndex]
 			userAgent := userAgentString[atIndex+1:]
 
-			var result = sharedUserAgentParser.Parse(userAgent)
-			var osInfo = result.os
+			var result = SharedUserAgentParser.Parse(userAgent)
+			var osInfo = result.OS
 			if len(osInfo.Name) > 0 {
 				dotIndex := strings.Index(osInfo.Version, ".")
 				if dotIndex > -1 {
@@ -233,7 +232,7 @@ Loop:
 				this.systemMap[serverId+"@"+osInfo.Name+"@"+osInfo.Version]++
 			}
 
-			var browser, browserVersion = result.browserName, result.browserVersion
+			var browser, browserVersion = result.BrowserName, result.BrowserVersion
 			if len(browser) > 0 {
 				dotIndex := strings.Index(browserVersion, ".")
 				if dotIndex > -1 {
diff --git a/internal/stats/user_agent_parser.go b/internal/stats/user_agent_parser.go
index 3190d75..a815e0b 100644
--- a/internal/stats/user_agent_parser.go
+++ b/internal/stats/user_agent_parser.go
@@ -5,10 +5,12 @@ package stats
 import (
 	"github.com/TeaOSLab/EdgeNode/internal/utils"
 	"github.com/mssola/user_agent"
+	"sync"
 )
 
+var SharedUserAgentParser = NewUserAgentParser()
+
 // UserAgentParser UserAgent解析器
-// 只支持单线程
 type UserAgentParser struct {
 	parser *user_agent.UserAgent
 
@@ -17,6 +19,7 @@ type UserAgentParser struct {
 	maxCacheItems int
 
 	cacheCursor int
+	locker      sync.RWMutex
 }
 
 func NewUserAgentParser() *UserAgentParser {
@@ -50,19 +53,25 @@ func (this *UserAgentParser) Parse(userAgent string) (result UserAgentParserResu
 		return
 	}
 
+	this.locker.RLock()
 	cacheResult, ok := this.cacheMap1[userAgent]
 	if ok {
+		this.locker.RUnlock()
 		return cacheResult
 	}
 
 	cacheResult, ok = this.cacheMap2[userAgent]
 	if ok {
+		this.locker.RUnlock()
 		return cacheResult
 	}
+	this.locker.RUnlock()
 
+	this.locker.Lock()
 	this.parser.Parse(userAgent)
-	result.os = this.parser.OSInfo()
-	result.browserName, result.browserVersion = this.parser.Browser()
+	result.OS = this.parser.OSInfo()
+	result.BrowserName, result.BrowserVersion = this.parser.Browser()
+	result.IsMobile = this.parser.Mobile()
 
 	if this.cacheCursor == 0 {
 		this.cacheMap1[userAgent] = result
@@ -77,6 +86,7 @@ func (this *UserAgentParser) Parse(userAgent string) (result UserAgentParserResu
 			this.cacheMap1 = map[string]UserAgentParserResult{}
 		}
 	}
+	this.locker.Unlock()
 
 	return
 }
diff --git a/internal/stats/user_agent_parser_result.go b/internal/stats/user_agent_parser_result.go
index b9d6fb5..f48bdcb 100644
--- a/internal/stats/user_agent_parser_result.go
+++ b/internal/stats/user_agent_parser_result.go
@@ -5,7 +5,8 @@ package stats
 import "github.com/mssola/user_agent"
 
 type UserAgentParserResult struct {
-	os             user_agent.OSInfo
-	browserName    string
-	browserVersion string
+	OS             user_agent.OSInfo
+	BrowserName    string
+	BrowserVersion string
+	IsMobile       bool
 }