The trajectory of the unmanned gyroplane will deviate from the set route in the process of turning flight. Aiming to the problem, the mechanism and stress are analyzed in the process of turning flight on the unmanned gyroplane first. Based on this, a control method that the deviated distance and deviated rate are used to fix the roll command and heading rate command is presented. The turn model control loop is designed accordingly to achieve the flight control under the set turning route. Simulation results show that the gyroplane can track the desired trajectory accurately by using the proposed method. The desired effects are achieved.