The invention discloses an automatic bearing feeding and pressing-in device, which comprises a bearing feeding device and a bearing pressing-in device, wherein the bearing pressing-in device comprisesa rotor fixing base; the bearing feeding device comprises an upper fixed plate and a bearing support plate, the upper fixed plate is provided with a storage column, the lower end of the storage column is provided with a push-out clearance, the front side of the push-out clearance is provided with a push-out plate, the rear side of the bearing support plate is provided with a bearing conveying belt, the rear side of the storage column is provided with a bearing pressing plate, the conveying tail end of the bearing conveying belt is provided with a feeding groove, the feeding groove is arrangedin a mode of inclining towards the lower front, the lower end of the feeding groove is provided with a bearing outlet, and a bearing pressing block capable of moving left and right in a reciprocatingmanner and the rotor fixing base are arranged by the side of the bearing outlet. The push-out plate pushes backwards so as to enable the motor bearing to fall on the bearing conveying belt, the motorbearing gets into the feeding groove, and then the motor bearing is pressed in a motor shaft by the bearing pressing block. The automatic bearing feeding and pressing-in device is simple and reliablein structure, capable of realizing automation and high in production efficiency. The automatic bearing feeding and pressing-in device is applied to the production of motor rotors.