The invention discloses an automatic feeding device of spherical rollers. The automatic feeding device comprises a vibration disc mechanism and a conveying mechanism, and further comprises a material distributing mechanism and a pushing mechanism; in the material distributing mechanism, an industrial camera is used for detecting and identifying the orientations of the end faces of the spherical rollers, and a stepping motor drives a material pulling blade to pull the spherical rollers with different orientations into different sliding ways; a material distributing spiral sliding way and a material distributing straight sliding way are used for conveying the spherical rollers to corresponding material ways of a belt conveyor, and the belt conveyor is divided by a baffle into two conveying material ways which correspond to two roller grinding machines; and in the pushing mechanism, telescoping mechanisms are installed in front of feeding openings of the grinding machines and used for pushing the spherical rollers into the feeding openings of the grinding machines. By means of the automatic feeding device, the end faces of the rollers can be automatically identified, the rollers can be sequentially conveyed to the grinding machines, the requirement for machining the spherical rollers in different specifications is met, materials can be supplied by one automatic feeding device to the two grinding machines to work, scattering of the rollers can be prevented through the arrangement of the different material ways, and the production efficiency is improved.