diff --git a/example/test/main.go b/example/test/main.go
index 7e4857d..c4cdd4a 100644
--- a/example/test/main.go
+++ b/example/test/main.go
@@ -34,7 +34,7 @@ func main() {
 	logs.PrintErr(err)
 
 	for _, v := range resp {
-		logs.Debug(*v)
+		logs.Debugf("%#v\n", v)
 	}
 
 	select {}
diff --git a/protocol/model_k.go b/protocol/model_k.go
index be847a4..0272f95 100644
--- a/protocol/model_k.go
+++ b/protocol/model_k.go
@@ -13,7 +13,7 @@ func (this Price) Float64() float64 {
 }
 
 func (this Price) String() string {
-	return fmt.Sprintf("%.2f 元", this.Float64())
+	return fmt.Sprintf("%0.2f 元", this.Float64())
 }
 
 type PriceLevel struct {