An AGV automatic feeding and discharging production line of a ball milling workshop comprises a feeding and returning platform, ball milling machining lines and an AGV material conveying system. The two ends of the feeding and returning platform extend towards the same side to from two parallel ball milling machining lines, the AGV material conveying system is arranged between the two ball millingmachining lines, the feeding and returning platform provides machining raw materials for the AGV material conveying system, the AGV material conveying system is used for conveying machining raw materials to ball milling machines of the ball milling machining lines, and products machined through the ball milling machines are recycled and returned to the feeding and returning platform to be unloaded. The production line has the beneficial effects that each ball milling machine can achieve automatic feeding and discharging, manpower cost is saved, meanwhile, production efficiency is improved, the ball milling machines are reasonably arranged, and it is possible that production force can be infinitely enlarged.