diff --git a/tool/kratos-gen-bts/testdata/dao.bts.go b/tool/kratos-gen-bts/testdata/dao.bts.go
index 4b8f0096c..ced05553b 100644
--- a/tool/kratos-gen-bts/testdata/dao.bts.go
+++ b/tool/kratos-gen-bts/testdata/dao.bts.go
@@ -27,12 +27,10 @@ import (
 	"github.com/bilibili/kratos/pkg/sync/errgroup"
 )
 
-var (
-	_ _bts
-)
+var _ _bts
 
 // Demos get data from cache if miss will call source method, then add to cache.
-func (d *Dao) Demos(c context.Context, keys []int64) (res map[int64]*Demo, err error) {
+func (d *dao) Demos(c context.Context, keys []int64) (res map[int64]*Demo, err error) {
 	if len(keys) == 0 {
 		return
 	}
@@ -111,7 +109,7 @@ func (d *Dao) Demos(c context.Context, keys []int64) (res map[int64]*Demo, err e
 }
 
 // Demos1 get data from cache if miss will call source method, then add to cache.
-func (d *Dao) Demos1(c context.Context, keys []int64) (res map[int64]*Demo, err error) {
+func (d *dao) Demos1(c context.Context, keys []int64) (res map[int64]*Demo, err error) {
 	if len(keys) == 0 {
 		return
 	}
@@ -190,7 +188,7 @@ func (d *Dao) Demos1(c context.Context, keys []int64) (res map[int64]*Demo, err
 }
 
 // Demo get data from cache if miss will call source method, then add to cache.
-func (d *Dao) Demo(c context.Context, key int64) (res *Demo, err error) {
+func (d *dao) Demo(c context.Context, key int64) (res *Demo, err error) {
 	addCache := true
 	res, err = d.CacheDemo(c, key)
 	if err != nil {
@@ -223,7 +221,7 @@ func (d *Dao) Demo(c context.Context, key int64) (res *Demo, err error) {
 }
 
 // Demo1 get data from cache if miss will call source method, then add to cache.
-func (d *Dao) Demo1(c context.Context, key int64, pn int, ps int) (res *Demo, err error) {
+func (d *dao) Demo1(c context.Context, key int64, pn int, ps int) (res *Demo, err error) {
 	addCache := true
 	res, err = d.CacheDemo1(c, key, pn, ps)
 	if err != nil {
@@ -250,7 +248,7 @@ func (d *Dao) Demo1(c context.Context, key int64, pn int, ps int) (res *Demo, er
 }
 
 // None get data from cache if miss will call source method, then add to cache.
-func (d *Dao) None(c context.Context) (res *Demo, err error) {
+func (d *dao) None(c context.Context) (res *Demo, err error) {
 	addCache := true
 	res, err = d.CacheNone(c)
 	if err != nil {
diff --git a/tool/kratos-gen-bts/testdata/dao.go b/tool/kratos-gen-bts/testdata/dao.go
index 6e1f5aece..e3e68edfc 100644
--- a/tool/kratos-gen-bts/testdata/dao.go
+++ b/tool/kratos-gen-bts/testdata/dao.go
@@ -13,13 +13,13 @@ type Demo struct {
 }
 
 // Dao .
-type Dao struct {
+type dao struct {
 	cache *fanout.Fanout
 }
 
 // New .
-func New() *Dao {
-	return &Dao{cache: fanout.New("cache")}
+func New() *dao {
+	return &dao{cache: fanout.New("cache")}
 }
 
 //go:generate kratos tool genbts
diff --git a/tool/kratos-gen-bts/testdata/multi.go b/tool/kratos-gen-bts/testdata/multi.go
index b398adb67..4685d37ef 100644
--- a/tool/kratos-gen-bts/testdata/multi.go
+++ b/tool/kratos-gen-bts/testdata/multi.go
@@ -12,37 +12,37 @@ var (
 )
 
 // CacheDemos .
-func (d *Dao) CacheDemos(c context.Context, keys []int64) (map[int64]*Demo, error) {
+func (d *dao) CacheDemos(c context.Context, keys []int64) (map[int64]*Demo, error) {
 	// get data from cache
 	return _multiCacheFunc(c, keys)
 }
 
 // RawDemos .
-func (d *Dao) RawDemos(c context.Context, keys []int64) (map[int64]*Demo, error) {
+func (d *dao) RawDemos(c context.Context, keys []int64) (map[int64]*Demo, error) {
 	// get data from db
 	return _multiRawFunc(c, keys)
 }
 
 // AddCacheDemos .
-func (d *Dao) AddCacheDemos(c context.Context, values map[int64]*Demo) error {
+func (d *dao) AddCacheDemos(c context.Context, values map[int64]*Demo) error {
 	// add to cache
 	return _multiAddCacheFunc(c, values)
 }
 
 // CacheDemos1 .
-func (d *Dao) CacheDemos1(c context.Context, keys []int64) (map[int64]*Demo, error) {
+func (d *dao) CacheDemos1(c context.Context, keys []int64) (map[int64]*Demo, error) {
     // get data from cache
     return _multiCacheFunc(c, keys)
 }
 
 // RawDemos .
-func (d *Dao) RawDemos1(c context.Context, keys []int64) (map[int64]*Demo, error) {
+func (d *dao) RawDemos1(c context.Context, keys []int64) (map[int64]*Demo, error) {
     // get data from db
     return _multiRawFunc(c, keys)
 }
 
 // AddCacheDemos .
-func (d *Dao) AddCacheDemos1(c context.Context, values map[int64]*Demo) error {
+func (d *dao) AddCacheDemos1(c context.Context, values map[int64]*Demo) error {
     // add to cache
     return _multiAddCacheFunc(c, values)
 }
diff --git a/tool/kratos-gen-bts/testdata/none.go b/tool/kratos-gen-bts/testdata/none.go
index b504c9c79..c3202613a 100644
--- a/tool/kratos-gen-bts/testdata/none.go
+++ b/tool/kratos-gen-bts/testdata/none.go
@@ -12,19 +12,19 @@ var (
 )
 
 // CacheNone .
-func (d *Dao) CacheNone(c context.Context) (*Demo, error) {
+func (d *dao) CacheNone(c context.Context) (*Demo, error) {
 	// get data from cache
 	return _noneCacheFunc(c)
 }
 
 // RawNone .
-func (d *Dao) RawNone(c context.Context) (*Demo, error) {
+func (d *dao) RawNone(c context.Context) (*Demo, error) {
 	// get data from db
 	return _noneRawFunc(c)
 }
 
 // AddCacheNone .
-func (d *Dao) AddCacheNone(c context.Context, value *Demo) error {
+func (d *dao) AddCacheNone(c context.Context, value *Demo) error {
 	// add to cache
 	return _noneAddCacheFunc(c, value)
 }
diff --git a/tool/kratos-gen-bts/testdata/single.go b/tool/kratos-gen-bts/testdata/single.go
index db7c13c55..fe390216a 100644
--- a/tool/kratos-gen-bts/testdata/single.go
+++ b/tool/kratos-gen-bts/testdata/single.go
@@ -12,37 +12,37 @@ var (
 )
 
 // CacheDemo .
-func (d *Dao) CacheDemo(c context.Context, key int64) (*Demo, error) {
+func (d *dao) CacheDemo(c context.Context, key int64) (*Demo, error) {
 	// get data from cache
 	return _singleCacheFunc(c, key)
 }
 
 // RawDemo .
-func (d *Dao) RawDemo(c context.Context, key int64) (*Demo, error) {
+func (d *dao) RawDemo(c context.Context, key int64) (*Demo, error) {
 	// get data from db
 	return _singleRawFunc(c, key)
 }
 
 // AddCacheDemo .
-func (d *Dao) AddCacheDemo(c context.Context, key int64, value *Demo) error {
+func (d *dao) AddCacheDemo(c context.Context, key int64, value *Demo) error {
 	// add to cache
 	return _singleAddCacheFunc(c, key, value)
 }
 
 // CacheDemo1 .
-func (d *Dao) CacheDemo1(c context.Context, key int64, pn, ps int) (*Demo, error) {
+func (d *dao) CacheDemo1(c context.Context, key int64, pn, ps int) (*Demo, error) {
 	// get data from cache
 	return nil, nil
 }
 
 // RawDemo1 .
-func (d *Dao) RawDemo1(c context.Context, key int64, pn, ps int) (*Demo, *Demo, error) {
+func (d *dao) RawDemo1(c context.Context, key int64, pn, ps int) (*Demo, *Demo, error) {
 	// get data from db
 	return nil, nil, nil
 }
 
 // AddCacheDemo1 .
-func (d *Dao) AddCacheDemo1(c context.Context, key int64, value *Demo, pn, ps int) error {
+func (d *dao) AddCacheDemo1(c context.Context, key int64, value *Demo, pn, ps int) error {
 	// add to cache
 	return nil
 }