diff --git a/protocol/model_code.go b/protocol/model_code.go
index 501982d..3c7c8ee 100644
--- a/protocol/model_code.go
+++ b/protocol/model_code.go
@@ -11,11 +11,11 @@ type CodeResp struct {
 }
 
 type Code struct {
-	Name     string  //股票名称
-	Code     string  //股票代码
-	Multiple uint16  //倍数,基本是0x64=100
-	Decimal  int8    //小数点,基本是2
-	PreClose float64 //未知
+	Name      string  //股票名称
+	Code      string  //股票代码
+	Multiple  uint16  //倍数,基本是0x64=100
+	Decimal   int8    //小数点,基本是2
+	LastPrice float64 //昨收价格,单位元,对个股无效,对指数有效,对其他未知
 }
 
 func (this *Code) String() string {
@@ -45,11 +45,11 @@ func (code) Decode(bs []byte) (*CodeResp, error) {
 
 	for i := uint16(0); i < resp.Count; i++ {
 		sec := &Code{
-			Code:     string(bs[:6]),
-			Multiple: Uint16(bs[6:8]),
-			Name:     string(UTF8ToGBK(bs[8:16])),
-			Decimal:  int8(bs[20]),
-			PreClose: getVolume(Uint32(bs[21:25])),
+			Code:      string(bs[:6]),
+			Multiple:  Uint16(bs[6:8]),
+			Name:      string(UTF8ToGBK(bs[8:16])),
+			Decimal:   int8(bs[20]),
+			LastPrice: getVolume(Uint32(bs[21:25])),
 		}
 		//logs.Debug(bs[25:29]) //26和28字节 好像是枚举(基本是44,45和34,35)
 		bs = bs[29:]