Abstract: the tire pressure and temperature and temperature detection system of automobile has become the research focus China automotive electronics industry,reduce the automobile tire the incidence of traffic accidents,become the important topic of the world automobile industry. In the next five years the global is expected to have 700000000 1 millions of tires need to install tire pressure monitor. The design of a practical real-time monitoring system based on SCM of automobile tire pressure temperature model,including four transmitter and receiver,in addition to pressure,temperature can be automatically provided for automobile tyre value,can monitor the tire abnormal leakage; but also by the user according to their own car condition and the use of the environment to adjust the alarm value. Prevent the occurrence of traffic accidents.