diff --git a/docs/develop/guidance/module_StepPlayer.md b/docs/develop/guidance/module_StepPlayer.md
new file mode 100644
index 000000000..9b2335f8d
--- /dev/null
+++ b/docs/develop/guidance/module_StepPlayer.md
@@ -0,0 +1,12 @@
+```ts
+type Props = {
+  step: Step  // 已有的 Step 类型
+}
+type Events = {
+  stepCompleted: []
+}
+
+type StepPlayerExpose = {
+  checkAnswer(): boolean
+}
+```