The invention provides an automobile oil filler cap PUSH switch integrated with functions of opening, closing and locking. The automobile oil filler cap PUSH switch comprises an oil filler cap and a motor; and the automobile oil filler cap PUSH switch realizes the functions of locking and unlocking the oil filler cap through positive and negative rotation of the motor. The oil filler cap of an oiltank is simplified, and an ejected-out performer and the ejected-out locking motor are combined into one part, so that the functions of locking and unlocking the oil filler cap through positive and negative rotation of the motor are realized.