In this study, angular rate feedback control of multi-rotor helicopter is designed by using adaptive PID method. In recent years, multi-rotor helicopters have gained worldwide attention. The multi-rotor helicopters are expected to work in various fields such as aerial photograph, transportation, inspection. Adaptive PID controller with parallel feed-forward compensator : PFC is designed based on mathematical model of the helicopter. The effectiveness of the proposed control system is verified by numerical simulation and experiment. The results of the experiment with jig, and free flight experiment shows the efficiency of proposed adaptive angular rate controller.