diff --git a/README.MD b/README.MD
index de7210d..5b0e7e7 100644
--- a/README.MD
+++ b/README.MD
@@ -28,6 +28,7 @@
 
 ## Example description
 
+
 ```
 examples
 ├── ArduinoLoRa                                 # Just only support SX1276/SX1278 radio module
@@ -42,19 +43,22 @@ examples
 ├── OLED                                        # OLED demo examples    
 │   ├── SSD1306SimpleDemo
 │   └── SSD1306UiDemo   
-└── RadioLibExamples                            # RadioLib examples,Support SX1276/78/62
-    ├── SX1262
-    │   ├── SX1262_Receive_Interrupt
-    │   └── SX1262_Transmit_Interrupt
-    ├── SX1276
-    │   ├── SX1276_Receive_Interrupt
-    │   └── SX1276_Transmit_Interrupt
-    ├── SX1278
-    │   ├── SX1278_Receive
-    │   ├── SX1278_Receive_Interrupt
-    │   ├── SX1278_Transmit
-    │   └── SX1278_Transmit_Interrupt
-    └── TBeamAllFunction                        # T-Beam all function example
+├── RadioLibExamples                            # RadioLib examples,Support SX1276/78/62
+│   ├── SX1262
+│   │   ├── SX1262_Receive_Interrupt
+│   │   └── SX1262_Transmit_Interrupt
+│   ├── SX1276
+│   │   ├── SX1276_Receive_Interrupt
+│   │   └── SX1276_Transmit_Interrupt
+│   ├── SX1278
+│   │   ├── SX1278_Receive
+│   │   ├── SX1278_Receive_Interrupt
+│   │   ├── SX1278_Transmit
+│   │   └── SX1278_Transmit_Interrupt
+│   └── TBeamAllFunction                        # T-Beam all function example
+└── TTN
+    └── TTN_OTTA                                # OTAA method Join TTN example
+
 ```
 
 <h3 align = "left">PinOut :</h3>
diff --git a/README_CN.MD b/README_CN.MD
index c10abca..323a352 100644
--- a/README_CN.MD
+++ b/README_CN.MD
@@ -43,19 +43,22 @@ examples
 ├── OLED                                        # OLED demo examples    
 │   ├── SSD1306SimpleDemo
 │   └── SSD1306UiDemo   
-└── RadioLibExamples                            # RadioLib examples,Support SX1276/78/62
-    ├── SX1262
-    │   ├── SX1262_Receive_Interrupt
-    │   └── SX1262_Transmit_Interrupt
-    ├── SX1276
-    │   ├── SX1276_Receive_Interrupt
-    │   └── SX1276_Transmit_Interrupt
-    ├── SX1278
-    │   ├── SX1278_Receive
-    │   ├── SX1278_Receive_Interrupt
-    │   ├── SX1278_Transmit
-    │   └── SX1278_Transmit_Interrupt
-    └── TBeamAllFunction                        # T-Beam all function example
+├── RadioLibExamples                            # RadioLib examples,Support SX1276/78/62
+│   ├── SX1262
+│   │   ├── SX1262_Receive_Interrupt
+│   │   └── SX1262_Transmit_Interrupt
+│   ├── SX1276
+│   │   ├── SX1276_Receive_Interrupt
+│   │   └── SX1276_Transmit_Interrupt
+│   ├── SX1278
+│   │   ├── SX1278_Receive
+│   │   ├── SX1278_Receive_Interrupt
+│   │   ├── SX1278_Transmit
+│   │   └── SX1278_Transmit_Interrupt
+│   └── TBeamAllFunction                        # T-Beam all function example
+└── TTN
+    └── TTN_OTTA                                # OTAA method Join TTN example
+
 ```
 
 <h3 align = "left">引脚映射 :</h3>