It is a big problem to determine the droop coefficient when using the droop method. The droop coefficient is small and dynamic response speed is slow; increasing the droop coefficient can improve the dynamic response, but the amplitude of the frequency and the voltage can deviate significantly from the setting value, resulting in the instability of the system, so it is difficult to reconcile the contradictions. This paper presents the droop control strategy of piecewise hysteresis, instead of a sag curve with three sag curve, using this method can not only solve the problem of dynamic response but also can increase the power output range and keep the output of the voltage amplitude and frequency not changing too much. Finally let the subsection hysteresis droop control strategy compared with the traditional droop control strategy, the comparison results prove the feasibility and superiority of this strategy.