The invention provides a metal material circulating-type feeding device for gear processing. The metal material circulating-type feeding device comprises a bottom rotating block and a thread adjustingshaft, a base is of a trapezoid -shaped frame structure, a control electricity box is mounted in the base and connected with a driving motor through a power line electrically, a spiral feeding shaftis mounted in a feeding pipe, the bottom of the spiral feeding shaft is located in a bottom feeding openings of the feeding pipe, the top of the spiral feeding shaft is located in a top discharging opening of the feeding pipe, the number of the driving gears is three, one driving gear is mounted at the top of the spiral feeding shaft, the driving gear at the top of the spiral feeding shaft is in mutual transmission connection with the driving gear at the top of the driving motor, and the driving motor is mounted on the end face of the top of the feeding pipe through bolts. The height of the top discharging opening of the feeding pipe is adjusted up and down beneficially, the metal material is conveniently conveyed to different height places by the workers, and the feeding demand of the metal material of different heights is met.