Sipeed Maixduino how can I Analogread

Although this board has an Arduino Uno form factor, there is nothing on the page you linked to that clearly indicate that it can be programmed like an Arduino or with the Arduino IDE. So I'm not sure if anyone in this forum will be able to help you with it at all, let alone how to achieve something that the board's designers may not have foreseen the need for. Perhaps Sipeed have a help forum?