Designs a SP12-based tire pressure monitoring system (TPMS) and remote telecommunication system. The micro-controller processes the detected data of the sensor to achieve the tire parameter (pressure and temperature) real-time detection and abnormal alarm, and receives the GPS positioning information to transmit the information of the AT command mode through the GSM wireless communication module to the driver cell phone, and the driver can understand the real condition of the vehicle. Practical application shows that the tire pressure monitoring system and telecommunication system have low power consumption, high reliability, high precision, high security and other advantages.