Abstract: [Abstract] Objective: To explore the effect of the torque control auxiliary arch on maxillary anterior teerh. Method: 19 patients, used torque control auxiliary arch on maxillary anterior teerh with straight wire appliance, were analyzed by cephalometric results. The results were analyzed by t test. Results: U1-NA and U1-SN value invreased (P<0.01), postive torque was achieved by torque control auxiliary arch on maxillary anterior teerh. Conclusion: On maxillary anterior teeth, torque control auxiliary arch is an effective way for the toque control.