diff --git a/share/types.go b/share/types.go
index 85d811dc..e9d897a2 100644
--- a/share/types.go
+++ b/share/types.go
@@ -97,7 +97,8 @@ type Moapi struct {
 
 // Static setting
 type Static struct {
-	Rewrite []map[string]string `json:"rewrite,omitempty"`
+	Rewrite     []map[string]string `json:"rewrite,omitempty"`
+	SourceRoots map[string]string   `json:"sourceRoots,omitempty"`
 }
 
 // AppStorage 应用存储
diff --git a/sui/api/request.go b/sui/api/request.go
index c84159a4..567a693e 100644
--- a/sui/api/request.go
+++ b/sui/api/request.go
@@ -270,7 +270,7 @@ func (r *Request) MakeCache() (*core.Cache, int, error) {
 	}
 
 	// Backend script
-	script, err := core.LoadScript(r.File)
+	script, err := core.LoadScript(r.File, true)
 	if err != nil {
 		return nil, 500, fmt.Errorf("script error, please re-complie the page %s", err.Error())
 	}
diff --git a/sui/core/script.go b/sui/core/script.go
index 779c5c60..51a89c9b 100644
--- a/sui/core/script.go
+++ b/sui/core/script.go
@@ -2,6 +2,7 @@ package core
 
 import (
 	"fmt"
+	"path/filepath"
 	"strings"
 	"time"
 
@@ -10,6 +11,7 @@ import (
 	"github.com/yaoapp/gou/application"
 	v8 "github.com/yaoapp/gou/runtime/v8"
 	"github.com/yaoapp/gou/runtime/v8/bridge"
+	"github.com/yaoapp/yao/share"
 )
 
 // Scripts loaded scripts
@@ -62,9 +64,9 @@ func LoadScript(file string, disableCache ...bool) (*Script, error) {
 		}
 	}
 
-	file = base + ".ts"
+	file = base + ".backend.ts"
 	if exist, _ := application.App.Exists(file); !exist {
-		file = base + ".js"
+		file = base + ".backend.js"
 	}
 
 	if exist, _ := application.App.Exists(file); !exist {
@@ -81,6 +83,7 @@ func LoadScript(file string, disableCache ...bool) (*Script, error) {
 		return nil, err
 	}
 
+	v8script.SourceRoots = getSourceRootReplaceFunc()
 	script := &Script{Script: v8script}
 	chScript <- &scriptData{base, script, saveScript}
 	return script, nil
@@ -217,3 +220,22 @@ func (script *Script) Helpers() ([]string, error) {
 
 	return nil, fmt.Errorf("helpers is %v should be []string", goValues)
 }
+
+func getSourceRootReplaceFunc() interface{} {
+	if share.App.Static.SourceRoots == nil {
+		return nil
+	}
+	roots := share.App.Static.SourceRoots
+	return func(file string) string {
+		for name, mapping := range roots {
+			if strings.HasPrefix(file, name) {
+				path := mapping + strings.TrimPrefix(file, name)
+				base := filepath.Base(path)
+				name := strings.TrimSuffix(base, ".backend.ts")
+				dir := filepath.Dir(path)
+				return filepath.Join(dir, name, base)
+			}
+		}
+		return file
+	}
+}
diff --git a/sui/storages/local/build.go b/sui/storages/local/build.go
index f9800dc9..4a428c2e 100644
--- a/sui/storages/local/build.go
+++ b/sui/storages/local/build.go
@@ -692,7 +692,7 @@ func (page *Page) writeBackendScript(data map[string]interface{}) error {
 	}
 
 	ext := filepath.Ext(file)
-	scriptFile := fmt.Sprintf("%s%s", page.publicFile(data), ext)
+	scriptFile := fmt.Sprintf("%s.backend%s", page.publicFile(data), ext)
 	scriptFileAbs := filepath.Join(application.App.Root(), scriptFile)
 	dir := filepath.Dir(scriptFileAbs)
 	if exist, _ := os.Stat(dir); exist == nil {