The invention mainly discloses an automatic wig dyeing machine which comprises a base, a triangular frame, a barrel body, a lifting mechanism, a cantilever mechanism and a stirring mechanism, wherein the base is provided with the triangular frame for fixing the lifting mechanism; one end of the cantilever mechanism is mounted on the lifting mechanism, and the stirring mechanism is mounted at the other end of the cantilever mechanism; the cantilever mechanism moves vertically on the lifting mechanism and drives a stirrer to move up and down; the stirrer can be placed in the barrel body when moving downwards, and is at certain distance higher than the barrel body when moving upwards; the cantilever mechanism is provided with a handle controlling the cantilever mechanism to rotate or to be fixed in a horizontal plane; a main motor is mounted in the cantilever mechanism; the stirring mechanism is driven to rotate through a speed reducing mechanism; and a stirring rod of the stirring mechanism is inserted into the hair to be dyed in the barrel body and rotates along with the stirring mechanism. The automatic wig dyeing machine disclosed by the invention realizes sufficient dyeing, obviously improves the dyeing quality, effectively prevents the wig products from being twisted, and is an automatic dyeing machine which has low pollution, low labor cost, high dyeing quality and low price and is easy to operate.