The　control　strategy　of　SOFC　(Solid　Oxide　Fuel　Cell)　generation　system　is　studied,　which　operates　as　the　master　in　master-slave　mode　of　microgrid.　It　is　divided　into　two　parts:　prime　mover　model　and　interface　model,　and　the　correlation　between　the　power　deviation　and　the　DC　voltage　connecting　models　is　discussed.　With　the　consideration　of　the　influence　of　cell　utilization　on　operational　safety,　the　controllers　with　multiple　feedback　loops　are　designed　for　DC/DC　converter　and　inverter　respectively.　By　mode　switching,　SOFC　generation　system　outputs　the　set　power　in　grid-connection　mode　and　acts　as　a　balance　unit　in　islanded　mode,　outputting　fixed　voltage　and　supporting　frequency　reference.　The　DC　voltage-frequency　droop　control　is　also　introduced　to　transform　the　active　power　deviation　between　master　output　and　load　into　the　grid　frequency　deviation,　according　to　which,　the　primary　frequency　regulating　units　adjust　their　outputs　to　improve　the　transient　response　characteristic　of　grid.　Simulation　verifies　the　correctness　of　the　proposed　control　strategy.