Due to the presence of a large number of constant power loads (CPLs) in a stand?alone DC microgrid, the damping of the DC microgrid is reduced, leading to oscillations and even significant drops in the DC bus voltage. To address this issue, an active damping method is proposed to improve system stability. The damping of the converter is increased to suppress the resonant peak by connecting a virtual resistance in parallel at the port of the energy storage converter without adding extra sensors. The method for designing the active damping parameters is provided, and the effect of the proposed parallel virtual resistance method on system stability is analyzed using the frequency stability criterion. The performance of this method is also compared with that of the conventional damping method. Experimental results verify that the parallel virtual resistance method can effectively improve the stability of a stand?alone DC microgrid system in a wide frequency band.