diff --git a/agent/main.go b/agent/main.go
index a622fc7..91a2fbc 100644
--- a/agent/main.go
+++ b/agent/main.go
@@ -9,6 +9,7 @@ import (
 	"os/exec"
 	"os/signal"
 	"path/filepath"
+	"reflect"
 	"syscall"
 	"time"
 
@@ -312,10 +313,12 @@ func startDaemon() {
 		Stderr: devNull,
 	}
 
-	// 设置进程组，使子进程独立运行
-	cmd.SysProcAttr = &syscall.SysProcAttr{
-		Setsid: true,
+	// 设置进程组，使子进程独立运行 (跨平台兼容写法)
+	attr := &syscall.SysProcAttr{}
+	if field := reflect.ValueOf(attr).Elem().FieldByName("Setsid"); field.IsValid() {
+		field.SetBool(true)
 	}
+	cmd.SysProcAttr = attr
 
 	if err := cmd.Start(); err != nil {
 		fmt.Printf("启动失败: %v\n", err)
diff --git a/agent/service.go b/agent/service.go
index 084647f..848dcca 100644
--- a/agent/service.go
+++ b/agent/service.go
@@ -8,11 +8,13 @@ import (
 	"runtime"
 	"strconv"
 	"syscall"
+
+	"github.com/gofrs/flock"
 )
 
 // ========== PID 文件管理 ==========
 
-var pidFileLock *os.File
+var fileLock *flock.Flock
 
 func getPidFile() string {
 	return filepath.Join(dataDir, "agent.pid")
@@ -25,31 +27,21 @@ func getLockFile() string {
 // tryLock 尝试获取文件锁，确保只有一个实例运行
 func tryLock() bool {
 	os.MkdirAll(dataDir, 0755)
-	lockFile := getLockFile()
-
-	var err error
-	pidFileLock, err = os.OpenFile(lockFile, os.O_CREATE|os.O_RDWR, 0644)
-	if err != nil {
+	
+	fileLock = flock.New(getLockFile())
+	locked, err := fileLock.TryLock()
+	if err != nil || !locked {
+		fileLock = nil
 		return false
 	}
-
-	// 尝试获取排他锁（非阻塞）
-	err = syscall.Flock(int(pidFileLock.Fd()), syscall.LOCK_EX|syscall.LOCK_NB)
-	if err != nil {
-		pidFileLock.Close()
-		pidFileLock = nil
-		return false
-	}
-
 	return true
 }
 
 // unlock 释放文件锁
 func unlock() {
-	if pidFileLock != nil {
-		syscall.Flock(int(pidFileLock.Fd()), syscall.LOCK_UN)
-		pidFileLock.Close()
-		pidFileLock = nil
+	if fileLock != nil {
+		fileLock.Unlock()
+		fileLock = nil
 		os.Remove(getLockFile())
 	}
 }
diff --git a/go.mod b/go.mod
index 8a8cfd4..cf2e5a7 100644
--- a/go.mod
+++ b/go.mod
@@ -41,6 +41,7 @@ require (
 	github.com/go-sql-driver/mysql v1.9.3 // indirect
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/gofrs/flock v0.13.0 // indirect
 	github.com/gohugoio/hugo v0.149.1 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
diff --git a/go.sum b/go.sum
index 46211f8..99cd507 100644
--- a/go.sum
+++ b/go.sum
@@ -108,6 +108,8 @@ github.com/gobwas/glob v0.2.3 h1:A4xDbljILXROh+kObIiy5kIaPYD8e96x1tgBhUI5J+Y=
 github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8=
 github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
 github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
+github.com/gofrs/flock v0.13.0 h1:95JolYOvGMqeH31+FC7D2+uULf6mG61mEZ/A8dRYMzw=
+github.com/gofrs/flock v0.13.0/go.mod h1:jxeyy9R1auM5S6JYDBhDt+E2TCo7DkratH4Pgi8P+Z0=
 github.com/gohugoio/go-i18n/v2 v2.1.3-0.20230805085216-e63c13218d0e h1:QArsSubW7eDh8APMXkByjQWvuljwPGAGQpJEFn0F0wY=
 github.com/gohugoio/go-i18n/v2 v2.1.3-0.20230805085216-e63c13218d0e/go.mod h1:3Ltoo9Banwq0gOtcOwxuHG6omk+AwsQPADyw2vQYOJQ=
 github.com/gohugoio/hashstructure v0.5.0 h1:G2fjSBU36RdwEJBWJ+919ERvOVqAg9tfcYp47K9swqg=