In　power　system,　capacitors　are　widely　used　to　compensate　reactive　power,　which　generally　cause　resonance　problems　in　harmonic　distorted　network.　In　this　paper,　A　method　of　using　a　parallel　active　power　filter　(PAPF)　to　damp　the　resonances　is　proposed.　The　proposed　method　is　compound　with　traditional　method,　it　shows　that　whether　the　capacitor　current　is　included　in　the　detecting　current　of　PAPF　or　not.　Also　the　PAPF　with　proposed　method　has　strong　ability　in　harmonic　compensation.　Finally,　the　experiment　results　are　presented　to　verify　the　analysis.