A vehicle key apparatus, mounted on an outer wall of a vehicle and a driver dashboard of the vehicle and the surroundings, including an electronic cipher keyboard, an RFID reader/writer (20), a biological features recognizer, wherein a portable electronic key comprises multi-functional appliances such as a mobile phone, a watch and the like, and an anti-theft system lock extension switch (5) is set beside an engine switch (3) of the vehicle; the door lock of the vehicle, the anti-theft system lock, the engine, the air-conditioner and the cargo hold are opened and closed and recorder data is read and so forth by means of the cipher, RFID, biological features, remote control, radio induction and the like. Due to the convenient use of the apparatus, there is no need or less need to carry keys, which enhances the performance of key management.