The utility model relates to a quartz boat lifting device of a wafer pusher. The lifting device comprises a rotary shaft, an elliptical rotary wheel, a shifting device and a base, wherein the shifting device is used to control the rotation of the rotary shaft; the base is used to bear the quartz boat and a wafer bearing basket; the base is provided with at least two rows of through holes and two rows of hollow cavities corresponding to the position for placing the quartz boat; and the hollow cavities penetrate through the base and also penetrate through the through hole. The rotary shaft is arranged in the hollow cavity, and the elliptical rotary wheel is arranged on the position of the rotary shaft corresponding to the through holes.