The　circuit　topology,　control　strategy,　steady　principle　and　characteristic,　and　design　criteria　of　key　circuit　parameters　of　the　differential　Boost　DC-DC　converter　mode　inverter　with　high　frequency　link　were　proposed　and　deeply　investigated.　The　principle　test　also　was　given.　This　kind　of　inverter　is　differentially　constituted　of　two　same　Boost　DC-DC　converters　with　out　of　phase　low-frequency　sine　pulsate　DC　output　voltage.　The　research　results　have　demonstrated　that　this　kind　of　inverter　has　the　advantages　such　as　high　frequency　electrical　isolation,　simple　topology,　bi-direction　power　flow,　small　input　ripple　current,　strong　adaptability　to　various　loads,　high　reliability　at　short　circuit.　High　frequency　link＇s　inverting　technologies　theory　in　power　electronics　has　been　broaden　and　deepen.　©　2010　Chinese　Society　for　Electrical　Engineering.