The invention discloses an electric pressing mechanism of an automobile fan motor bearing assembling machine. The electric pressing mechanism of the automobile fan motor bearing assembling machine comprises a front connection base, a servo motor, a speed reducer, a power converter and a screw-type linear pusher, wherein the screw-type linear pusher is installed on an upper ejection plate, the upper end of the screw-type linear pusher is provided with the power converter, the input side of the power converter is provided with the speed reducer, the input side of the speed reducer is provided with the servo motor, and a push rod of the screw-type linear pusher is provided with the front connection base. By means of the mode, the assembling accuracy can be effectively improved, labor cost is reduced, production efficiency is improved and production cost is directly reduced.