diff --git a/kernel/go.mod b/kernel/go.mod
index 035423f62..359fa9230 100644
--- a/kernel/go.mod
+++ b/kernel/go.mod
@@ -56,6 +56,7 @@ require (
 	dmitri.shuralyov.com/font/woff2 v0.0.0-20180220214647-957792cbbdab // indirect
 	github.com/Masterminds/goutils v1.1.1 // indirect
 	github.com/Masterminds/semver/v3 v3.1.1 // indirect
+	github.com/Xuanwo/go-locale v1.1.0 // indirect
 	github.com/alecthomas/chroma v0.10.0 // indirect
 	github.com/andybalholm/cascadia v1.3.1 // indirect
 	github.com/asaskevich/EventBus v0.0.0-20200907212545-49d423059eef // indirect
@@ -112,7 +113,8 @@ require (
 
 replace github.com/mattn/go-sqlite3 => github.com/88250/go-sqlite3 v1.14.13-0.20220412041952-88c3aaa8595e
 
-//replace github.com/siyuan-note/dejavu => D:\88250\dejavu
+replace github.com/siyuan-note/dejavu => D:\88250\dejavu
+
 //replace github.com/siyuan-note/httpclient => D:\88250\httpclient
 //replace github.com/siyuan-note/filelock => D:\88250\filelock
 //replace github.com/88250/lute => D:\gogogo\src\github.com\88250\lute
diff --git a/kernel/go.sum b/kernel/go.sum
index a2feb9dd8..a606c228a 100644
--- a/kernel/go.sum
+++ b/kernel/go.sum
@@ -73,6 +73,8 @@ github.com/Masterminds/sprig/v3 v3.2.2 h1:17jRggJu518dr3QaafizSXOjKYp94wKfABxUmy
 github.com/Masterminds/sprig/v3 v3.2.2/go.mod h1:UoaO7Yp8KlPnJIYWTFkMaqPUYKTfGFPhxNuwnnxkKlk=
 github.com/PuerkitoBio/goquery v1.8.0 h1:PJTF7AmFCFKk1N6V6jmKfrNH9tV5pNE6lZMkG0gta/U=
 github.com/PuerkitoBio/goquery v1.8.0/go.mod h1:ypIiRMtY7COPGk+I/YbZLbxsxn9g5ejnI2HSMtkjZvI=
+github.com/Xuanwo/go-locale v1.1.0 h1:51gUxhxl66oXAjI9uPGb2O0qwPECpriKQb2hl35mQkg=
+github.com/Xuanwo/go-locale v1.1.0/go.mod h1:UKrHoZB3FPIk9wIG2/tVSobnHgNnceGSH3Y8DY5cASs=
 github.com/alecthomas/chroma v0.10.0 h1:7XDcGkCQopCNKjZHfYrNLraA+M7e0fMiJ/Mfikbfjek=
 github.com/alecthomas/chroma v0.10.0/go.mod h1:jtJATyUxlIORhUOFNA9NZDWGAQ8wpxQQqNSB4rjA/1s=
 github.com/andybalholm/cascadia v1.3.1 h1:nhxRkql1kdYCc8Snf7D5/D3spOX+dBgjA6u8x004T2c=
@@ -435,6 +437,7 @@ github.com/siyuan-note/httpclient v0.0.0-20220629022115-8de64709cc5e h1:5tKpe6Yu
 github.com/siyuan-note/httpclient v0.0.0-20220629022115-8de64709cc5e/go.mod h1:UTb1xAQC/eCSDklGWp8qQYlY0+qrVA3+MyOIKcliRLg=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
+github.com/smartystreets/goconvey v1.6.7/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/spf13/afero v1.6.0/go.mod h1:Ai8FlHk4v/PARR026UzYexafAt9roJ7LcLMAmO6Z93I=
 github.com/spf13/cast v1.3.1/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
 github.com/spf13/cast v1.5.0 h1:rj3WzYc11XZaIZMPKmwP96zkFEnnAmV8s6XbB2aY32w=
@@ -663,6 +666,7 @@ golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210806184541-e5e7981a1069/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211020174200-9d6173849985/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211023085530-d6a326fbbf70/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220412211240-33da011f77ad/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e h1:CsOuNlbOuf0mzxJIefr6Q4uAUetRUwZE4qt7VfzP+xo=
 golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
diff --git a/kernel/model/conf.go b/kernel/model/conf.go
index d777c6802..efe60d9be 100644
--- a/kernel/model/conf.go
+++ b/kernel/model/conf.go
@@ -32,6 +32,7 @@ import (
 
 	"github.com/88250/gulu"
 	"github.com/88250/lute"
+	"github.com/Xuanwo/go-locale"
 	humanize "github.com/dustin/go-humanize"
 	"github.com/getsentry/sentry-go"
 	"github.com/siyuan-note/filelock"
@@ -39,6 +40,7 @@ import (
 	"github.com/siyuan-note/siyuan/kernel/sql"
 	"github.com/siyuan-note/siyuan/kernel/treenode"
 	"github.com/siyuan-note/siyuan/kernel/util"
+	"golang.org/x/text/language"
 )
 
 var Conf *AppConf
@@ -84,7 +86,7 @@ func InitConf() {
 		}
 	}
 
-	Conf = &AppConf{LogLevel: "debug", Lang: util.Lang}
+	Conf = &AppConf{LogLevel: "debug"}
 	confPath := filepath.Join(util.ConfDir, "conf.json")
 	if gulu.File.IsExist(confPath) {
 		data, err := os.ReadFile(confPath)
@@ -97,6 +99,37 @@ func InitConf() {
 		}
 	}
 
+	if "" != util.Lang {
+		Conf.Lang = util.Lang
+		util.LogInfof("initialized the specified language [%s]", util.Lang)
+	} else {
+		if "" == Conf.Lang {
+			// 未指定外观语言时使用系统语言
+
+			if userLang, err := locale.Detect(); nil == err {
+				var supportLangs []language.Tag
+				for lang := range langs {
+					if tag, err := language.Parse(lang); nil == err {
+						supportLangs = append(supportLangs, tag)
+					} else {
+						util.LogErrorf("load language [%s] failed: %s", lang, err)
+					}
+				}
+				matcher := language.NewMatcher(supportLangs)
+				lang, _, _ := matcher.Match(userLang)
+				base, _ := lang.Base()
+				region, _ := lang.Region()
+				util.Lang = base.String() + "_" + region.String()
+				Conf.Lang = util.Lang
+				util.LogInfof("initialized language [%s] based on device locale", Conf.Lang)
+			} else {
+				util.LogDebugf("check device locale failed [%s], using default language [en_US]", err)
+				util.Lang = "en_US"
+				Conf.Lang = util.Lang
+			}
+		}
+	}
+
 	Conf.Langs = loadLangs()
 	if nil == Conf.Appearance {
 		Conf.Appearance = conf.NewAppearance()
diff --git a/kernel/model/sync.go b/kernel/model/sync.go
index 6d52bc4e7..68a56c919 100644
--- a/kernel/model/sync.go
+++ b/kernel/model/sync.go
@@ -72,7 +72,7 @@ func SyncData(boot, exit, byHand bool) {
 	}
 
 	if util.IsMutexLocked(&syncLock) {
-		util.LogWarnf("a cloud sync operation still processing")
+		util.LogWarnf("sync is in progress")
 		planSyncAfter(30 * time.Second)
 		return
 	}
diff --git a/kernel/util/working.go b/kernel/util/working.go
index 025376567..78c887553 100644
--- a/kernel/util/working.go
+++ b/kernel/util/working.go
@@ -64,7 +64,7 @@ func Boot() {
 	readOnly := flag.Bool("readonly", false, "read-only mode")
 	accessAuthCode := flag.String("accessAuthCode", "", "access auth code")
 	ssl := flag.Bool("ssl", false, "for https and wss")
-	lang := flag.String("lang", "en_US", "zh_CN/zh_CHT/en_US/fr_FR/es_ES")
+	lang := flag.String("lang", "", "zh_CN/zh_CHT/en_US/fr_FR/es_ES")
 	mode := flag.String("mode", "prod", "dev/prod")
 	flag.Parse()
 
@@ -272,7 +272,7 @@ var (
 	Resident       bool
 	ReadOnly       bool
 	AccessAuthCode string
-	Lang           = "en_US"
+	Lang           = ""
 
 	Container string // docker, android, ios, std
 )