In　this　paper,　using　the　permanent　magnet　synchronous　motor　(PMSM)　as　the　motor　of　electric　power　steering　system;　establish　mathematical　models　of　the　system,　the　completion　of　the　EPS　system　architecture　design.　Adopt　the　composite　method　of　Feedforward　and　the　fuzzy　PI　control　track　on　the　target　current,　it＇s　improve　the　speed　and　accuracy　response　of　system,　reducing　the　tracking　delay.　Combine　with　steering　system　model,　two　freedom　degrees　vehicle　model　designing　the　power　curve　of　control　algorithm　and　simulating　the　overall　system.　The　results　of　simulation　show　that　the　design　of　the　curved　power　algorithm　achieves　to　a　good　target　of　power　control,　and　the　system　is　stability.