Abstract: Intelligent agricultural machinery and equipment is one of the ten major fields of Made in China 2025, and its autonomous driving technology has increasingly become the key research object of the industry. Electronic steering technology is the basis of automatic driving technology. The control effect of steering wheel of wheeled agricultural machinery directly affects the actual performance of automatic driving. In this study, John Deere C230 wheel-type harvester was used as the test platform. The electric steering wheel was used to replace the original steering wheel, and the steering wheel angle sensor was used to form feedback closed-loop control. A simple and feasible control algorithm design method was proposed, and a feedforward PID control algorithm was designed for the harvester. Finally, the control performance of the steering control system meets the application requirements through the real machine experiment, which lays a foundation for the subsequent research of automatic driving technology.