diff --git a/practise/interface-practise/people.go b/practise/interface-practise/people.go
new file mode 100644
index 0000000..d38139f
--- /dev/null
+++ b/practise/interface-practise/people.go
@@ -0,0 +1,56 @@
+package main
+
+import "fmt"
+
+type People interface {
+	GetName() string
+	GetAge() int
+
+	GetData() people
+}
+
+type people struct {
+	name string
+}
+
+func (p people) GetName() string {
+	return p.name
+}
+
+func (p people) GetData() people {
+	return p
+}
+
+func NewPeople(name string) people {
+	return people{
+		name: name,
+	}
+}
+
+type Ming struct {
+	people
+	age int
+}
+
+func (x Ming) GetAge() int {
+	return x.age
+}
+
+//func (x Ming) GetName() string {
+// return "daming"
+//}
+
+func NewMing() People {
+	return Ming{
+		people: NewPeople("xiaoming"),
+		age:    18,
+	}
+}
+
+func main() {
+	m := NewMing()
+
+	fmt.Println(m.GetAge())
+	fmt.Println(m.GetName())
+	fmt.Println(m.GetData())
+}