With　the　increasing　penetration　rate　of　distributed　renewable　energy　in　power　systems,　the　control　strategy　of　virtual　synchronous　generator　(VSG)　is　widely　used　for　several　years.　Some　existing　VSG　control　strategies　have　been　able　to　solve　the　stability　problems　caused　by　the　abnormal　grid　voltage,　but　the　effects　of　the　inertia　coefficient　and　the　droop　coefficient　on　the　voltage　stability　are　not　taken　into　account.　In　order　to　further　improve　the　voltage　stability　of　the　microgrid　system,　a　voltage　control　strategy　of　VSG　based　on　self-adaptive　inertia　coefficient　and　droop　coefficient　is　proposed　in　this　paper.　When　the　voltage　is　far　from　the　steady　state,　the　increase　of　the　inertia　coefficient　can　decrease　the　voltage　deviation.　On　the　contrary,　when　it　is　close　to　the　steady　state,　the　decrease　of　the　inertia　coefficient　can　make　the　system　response　speed　accelerate.　According　to　the　real-time　voltage　deviation,　the　droop　coefficient　can　change　adaptively　to　decrease　the　adjusting　time　and　the　voltage　deviation　during　the　disturbance.　Finally,　the　simulation　model　of　VSG　is　built　by　MATLAB/Simulink　for　conducting　simulation　experiments.　Compared　with　other　strategies,　the　correctness　and　effectiveness　of　the　proposed　control　strategy　are　validated.