The invention discloses a gear-type adjuster for a rice milling machine, belongs to the technical field of rice milling machine equipment, and aims to solve the problem that an existing rice milling machine gear adjuster is unsmooth and easily locked in pressure relief. The gear-type adjuster comprises a hand wheel, a pressure relief pulling rod is mounted at the center of the hand wheel, an upperscrew rod and a lower screw rod are arranged on the pressure relief pulling rod in a sleeving manner, the screw surface of the upper screw rod is matched with that of the lower screw rod, the upper screw rod is connected with the hand wheel, a hand wheel seat is mounted outside the upper screw rod in a sleeving manner, a guide ring is arranged outside the lower screw rod in a sleeving manner andconnected with the hand wheel seat, a mounting hole is formed in the peripheral surface of the guide ring along the radial direction of the guide ring, a guide screw is mounted in the mounting hole, aslot matched with the guide screw is formed in the lower screw rod, a rice retaining plate is mounted at one end, far away from the hand wheel, of the pressure relief pulling rod, and a rice retaining plate spring is arranged on the pressure relief pulling rod and positioned between the guide ring and the rice retaining plate in a sleeving manner. The gear-type adjuster is applicable to the ricemilling machine.