diff --git a/formula/barslast.go b/formula/barslast.go
index 7369beaef8aa964673037c5d2a1f09b65c15181f..1c9a3a0cf63da233ae8eecab5821b3e77cbb0aaf 100644
--- a/formula/barslast.go
+++ b/formula/barslast.go
@@ -7,7 +7,12 @@ import (
 // BARSLAST 上一次条件成立到当前的周期, BARSLAST(C/REF(C,1)>=1.1) 上一次涨停到今天的天数
 //
 //	为了测试SMA,BARSLAST必须要先实现, 给SMA提供序列换参数, 以便验证, python那边还没实现
-func BARSLAST(S stat.Series) []stat.DType {
+func BARSLAST(S stat.Series) stat.Series {
+	ns := BARSLAST2(S)
+	return stat.NewSeries[stat.DType](ns...)
+}
+
+func BARSLAST2(S stat.Series) []stat.DType {
 	fs := S.DTypes()
 	as := stat.Repeat[stat.DType](1, S.Len())
 	bs := stat.Repeat[stat.DType](0, S.Len())
diff --git a/formula/barslast_test.go b/formula/barslast_test.go
index b483fb7030e8abee44885b512598f020701af29c..0d02adbd1857ebb8d04911be390a57dabc2ad878 100644
--- a/formula/barslast_test.go
+++ b/formula/barslast_test.go
@@ -10,5 +10,5 @@ func TestBARSLAST(t *testing.T) {
 	f0 := []float64{1, 2, 3, 4, 5, 6, 0, 8, 9, 10, 11, 12}
 	i0 := CompareGt(f0, 100)
 	s0 := stat.NewSeries[bool](i0...)
-	fmt.Println(BARSLAST(s0))
+	fmt.Println(BARSLAST2(s0))
 }
diff --git a/formula/barslastcount.go b/formula/barslastcount.go
index 35e6007ef454b872a5e8381af1de36befdcba22c..d5d589144935be74017bbe66d2b70dad42f24370 100644
--- a/formula/barslastcount.go
+++ b/formula/barslastcount.go
@@ -5,10 +5,10 @@ import (
 )
 
 // BARSLASTCOUNT 统计连续满足S条件的周期数
-func BARSLASTCOUNT(S stat.Series) []int64 {
+func BARSLASTCOUNT(S stat.Series) stat.Series {
 	s := S.DTypes()
 	slen := len(s)
-	rt := stat.Repeat[int64](0, slen+1)
+	rt := stat.Repeat[stat.Int](0, slen+1)
 	for i := 0; i < slen; i++ {
 		if s[i] != 0 {
 			rt[i+1] = rt[i] + 1
@@ -16,5 +16,5 @@ func BARSLASTCOUNT(S stat.Series) []int64 {
 			rt[i+1] = rt[i+1]
 		}
 	}
-	return rt[1:]
+	return stat.NewSeries[stat.Int](rt[1:]...)
 }
diff --git a/formula/barssincen.go b/formula/barssincen.go
index 637b4059fe633709c90125196d8e73230d3a5d61..5171b60f7b99a384ea4dd8318652e6cc0fd9f6e6 100644
--- a/formula/barssincen.go
+++ b/formula/barssincen.go
@@ -5,7 +5,7 @@ import (
 )
 
 // BARSSINCEN N周期内第一次S条件成立到现在的周期数,N为常量
-func BARSSINCEN(S stat.Series, N any) []stat.Int {
+func BARSSINCEN(S stat.Series, N any) stat.Series {
 	ret := S.Rolling(N).Apply(func(X stat.Series, M stat.DType) stat.DType {
 		x := X.DTypes()
 		n := int(M)
@@ -20,6 +20,5 @@ func BARSSINCEN(S stat.Series, N any) []stat.Int {
 		return stat.DType(r)
 	})
 	r1 := ret.FillNa(0, true)
-	r2 := r1.Ints()
-	return r2
+	return r1
 }
diff --git a/formula/dma_test.go b/formula/dma_test.go
index 2dc2156412102e15ad91162a36cb1e823219ce6d..ab071d2f2efaf4b4f72a6bc07518b3dd094bc351 100644
--- a/formula/dma_test.go
+++ b/formula/dma_test.go
@@ -35,7 +35,7 @@ func TestDMA(t *testing.T) {
 		}
 		x0[idx] = t
 	})
-	n := BARSLAST(pandas.NewSeries(stat.SERIES_TYPE_FLOAT32, "", x0))
+	n := BARSLAST2(pandas.NewSeries(stat.SERIES_TYPE_FLOAT32, "", x0))
 	fmt.Println(n[len(n)-10:])
 	x := DMA(CLOSE, pandas.NewSeries(stat.SERIES_TYPE_DTYPE, "", n))
 
diff --git a/formula/ema_test.go b/formula/ema_test.go
index 8cddf866fae9a13068820c958259606dc94d84f2..23860a22a0f03ea5c2ecb0c18665564f42468aa7 100644
--- a/formula/ema_test.go
+++ b/formula/ema_test.go
@@ -32,7 +32,7 @@ func TestEMA(t *testing.T) {
 		x0[idx] = t
 	})
 	//x := stat.Where(v2, as, bs)
-	n := BARSLAST(pandas.NewSeries(stat.SERIES_TYPE_FLOAT32, "", x0))
+	n := BARSLAST2(pandas.NewSeries(stat.SERIES_TYPE_FLOAT32, "", x0))
 	fmt.Println(n[len(n)-10:])
 	x := EMA(CLOSE, pandas.NewSeries(stat.SERIES_TYPE_DTYPE, "", n))
 
diff --git a/formula/sma_test.go b/formula/sma_test.go
index 65d8390e6918f420f4ba598b300e4d637d75f259..e38e9133a5a5d7439c133e30b410e8d0810dad1f 100644
--- a/formula/sma_test.go
+++ b/formula/sma_test.go
@@ -34,7 +34,7 @@ func TestSMA(t *testing.T) {
 		x[idx] = t
 	})
 	//x := stat.Where(v2, as, bs)
-	n := BARSLAST(pandas.NewSeries(stat.SERIES_TYPE_FLOAT32, "", x))
+	n := BARSLAST2(pandas.NewSeries(stat.SERIES_TYPE_FLOAT32, "", x))
 	fmt.Println(n[len(n)-10:])
 	//r1 := SMA(CLOSE, pandas.NewSeries(pandas.SERIES_TYPE_FLOAT32, "", n), 1)
 	r1 := SMA(CLOSE, 7, 1)