Aiming　at　the　problem　that　the　bus　voltage　in　low-inertia　DC　microgrid　is　prone　to　be　affected　by　internal　power　fluctuations,　a　virtual　inertial　control　strategy　of　DC　microgrid　based　on　improved　model　prediction　control　is　proposed.　Firstly,　analog　virtual　synchronous　generator　(AVSG)　control　is　introduced　into　the　voltage　outer　loop,　and　the　inertia　of　DC　microgrid　is　improved　by　introducing　virtual　capacitance　and　damping　coefficient.　Secondly,　in　order　to　avoid　the　lag　phenomenon　caused　by　control　delay,　an　improved　model　predictive　control　is　introduced　into　the　current　inner　loop　to　achieve　fast　tracking　of　the　current　set　value,　while　eliminating　the　traditional　PI　controller　and　PWM　regulator,　thus　improving　the　dynamic　performance　of　the　control　system.　Finally,　a　system　model　is　established　based　on　Matlab/Simulink　for　simulation.　The　results　show　that　compared　with　the　traditional　PI-based　virtual　inertia　control　strategy,　the　proposed　control　strategy　in　this　paper　has　smaller　bus　voltage　fluctuation　amplitude　and　better　dynamic　performance,　which　can　effectively　improve　the　stability　of　DC　bus　voltage　and　the　inertia　of　DC　microgrid.　©　2023　IEEE.