The invention relates to the field of parking lots and provides a composite parking method, wherein, improvement is conducted on the basis of an existing parking lot, and the space utilizing rate of the parking lot can be increased. The composite parking method comprises the following steps that 1, a vehicle travels into a parking lot body along a traveling channel; 2, parking is conducted in an obliquely-arranged parking system through following strategies that A1, a driving wheel is driven through a driving motor to rotate, and moves outwards along a lateral moving guide rail, A2, the driving wheel drives a supporting frame and a bracket supported by the supporting frame to move outwards, A3, a hydraulic pump drives a hydraulic rod to move to enable the bracket to horizontally press close to the ground to allow the vehicle to be parked on the bracket, A4, after the vehicle is stably parked on the bracket, a hydraulic cylinder drives the hydraulic rod to move to enable the bracket tobe obliquely arranged together with the vehicle on the bracket, and A5, the driving wheel is reversely driven by the driving motor to move inwards along the lateral moving guide rail to enable an obliquely-arranged vehicle frame to return into an original queuing sequence, set in the obliquely-arranged parking system, of the obliquely-arranged vehicle frame; and 3, after the obliquely-arranged parking system is full of vehicles, parking is conducted in a double-layer parking frame.