Automobile anti-theft system based on double central processing units

The invention discloses an automobile anti-theft system based on double central processing units, comprising a key-free entering system, a remote controller and a starting system, wherein the starting system comprises a first central processing unit, an oil electric control module and a starting circuit. The automobile anti-theft system is characterized by also comprising a radio-frequency identification system and a chip key chain; the starting system also comprising a second central processing unit, and the radio-frequency identification system is electrically connected with the second central processing unit; and generally, the radio-frequency identification system is in a dormant zero-power consumption working state, when the legal remote controller can not control the oil electric control module to unlock or lock, the chip key chain contacts the radio-frequency identification system in a short distance so that the second central processing unit is waked up, and then the oil electric control module is con