Helicopter piloting has gradually become a way of transporting pilots in various ports. However the helicopter is a high-order, multi-variable, strongly coupled and unstable system that requires reliable and effective control methods for flight control. Based on the analysis of the 3-DOF helicopter system, a simplified system model of the 3-DOF helicopter is obtained.The PID controller is designed by using the conventional PID control method and a fast and effective simulation debugging GUI is designed to simulate the designed controller.The simulation results show that the simulation curves are stable at the expected values, which proves the controllability of the helicopter system and the effectiveness of PID control.