Vehicle-mounted drunk driving alarm system

The utility model provides a vehicle-mounted drunk driving alarm system, belongs to the field of alarm system, and the vehicle-mounted drunk driving alarm system comprises a vehicle-mounted terminal and an alarm and an alcohol detector both connected with the vehicle-mounted terminal; the alcohol detector is used for detecting alcohol content in a body of a driver and for sending alcohol detection result to the vehicle-mounted terminal; and the vehicle-mounted terminal transmits control instructions of whether to alarm or not, and the instructions are transmitted to the alarm according to the received alcohol detection result. The vehicle-mounted drunk driving alarm system can timely alarm the driver when drinking behavior of the driver is detected, simultaneously a telematics system is used to monitor vehicle and driver conditions in real time, and generation of drunk driving behavior is prevented.