This　paper　provides　a　solution　to　the　active　vibration　control　of　a　microsatellite　with　two　solar　panels.　At　first,　the　microsatellite　is　processed　as　a　finite　element　model　containing　a　rigid　body　and　two　flexible　bodies,　according　to　the　principles　of　mechanics,　and　that　the　dynamic　characteristics　are　solved　by　modal　analysis.　Secondly,　the　equation　involving　vibration　control　is　established　according　to　the　finite　element　calculation　results.　There　are　several　actuators　composed　of　macro　fibre　composite　on　the　two　solar　panels　for　outputting　control　force.　Furthermore,　the　control　voltage　for　driving　actuator　is　calculated　by　using　fuzzy　algorithm.　It　is　clear　that　the　smart　structure　consists　of　the　flexible　bodies　and　actuators.　Finally,　the　closed-loop　control　simulation　for　suppressing　harmful　vibration　is　established.　The　simulation　results　illustrate　that　the　responses　to　the　external　excitation　are　decreased　significantly　after　adopting　fuzzy　control.