diff --git a/docs/en/api-guides/blufi.rst b/docs/en/api-guides/blufi.rst
index 3d2dc0745e6..852e0f671a1 100644
--- a/docs/en/api-guides/blufi.rst
+++ b/docs/en/api-guides/blufi.rst
@@ -61,8 +61,8 @@ The Flow Chart of BluFi
 
         Phone <- {IDF_TARGET_NAME} [label="Advertising"];
         Phone -> {IDF_TARGET_NAME} [label="Create GATT connection"];
-        Phone <- {IDF_TARGET_NAME} [label="Negotiate key procedure"];
         Phone -> {IDF_TARGET_NAME} [label="Negotiate key procedure"];
+        Phone <- {IDF_TARGET_NAME} [label="Negotiate key procedure"];
         Phone -> {IDF_TARGET_NAME} [label="CTRL: Set {IDF_TARGET_NAME} to Phone Security mode"];
         Phone -> {IDF_TARGET_NAME} [label="DATA: SSID"];
         Phone -> {IDF_TARGET_NAME} [label="DATA: Password"];
diff --git a/docs/zh_CN/api-guides/blufi.rst b/docs/zh_CN/api-guides/blufi.rst
index 3dbe8c39153..e0374a5db8f 100644
--- a/docs/zh_CN/api-guides/blufi.rst
+++ b/docs/zh_CN/api-guides/blufi.rst
@@ -61,8 +61,8 @@ BluFi 流程图
 
         Phone <- {IDF_TARGET_NAME} [label="广播"];
         Phone -> {IDF_TARGET_NAME} [label="建立 GATT 链接"];
-        Phone <- {IDF_TARGET_NAME} [label="协商密钥"];
         Phone -> {IDF_TARGET_NAME} [label="协商密钥"];
+        Phone <- {IDF_TARGET_NAME} [label="协商密钥"];
         Phone -> {IDF_TARGET_NAME} [label="CTRL: 设置 {IDF_TARGET_NAME} 为手机安全模式"];
         Phone -> {IDF_TARGET_NAME} [label="DATA: SSID"];
         Phone -> {IDF_TARGET_NAME} [label="DATA: Password"];