In order to solve the problem of small application range, poor adaptability, mechanical structure and its function, this paper presents a design scheme of self-balancing mobile platform based on differential wheel drive. The mobile platform uses the nine-axis gyroscope and the magnetic encoder to collect the attitude information, through the processing of information to control the mobile platform to achieve the balance required to adjust the amount of adjustment of the motor, while balancing can also achieve the movement and other actions. The mobile platform for a wide range of applications, and can achieve automatic control and remote control two control methods. This article will be a detailed description of the design of the platform.