The invention relates to a parking lot, in particular to a high-rise three-dimensional parking building with two lanes and two cycles. The main body of the parking building is provided with at least two lifting passages. In order to alleviate the congestion during the parking process, improve the efficiency of parking and picking up the car, and set up the uplink buffer device, it can reduce the buffer during the transition process, improve the stability of the vehicle, and can also improve the service life of the lifting channel and reduce the possibility of cracks , set the buffer pad, can provide elastic buffer, reduce the buffer of the lifting channel and the parking platform, set the down buffer device, can provide buffer during the down process, provide stable support through the support plate, and the parking spaces on the parking platform are arranged in rows and columns Arrangement, and then form a straight passage, easy to find parking spaces, and then improve the efficiency of parking and picking up cars, and set up LED displays, which can display the status of parking spaces and facilitate guidance.