Abstract: The paper introduced a kind of treadmill control system.The system structure and its working principles were given.The structure and design of the software and hardware of the system were presented in details.The control system is based on embedded technology and serial communication technology, which can configure the parameters of the treadmill, show the statement when the system is working, record the user's sports information and play audio and video files.The result of strict testing shows that the control system is stable and reliable, and can meet the needs of consumers with its nice appearance.