The　traditional　flexible　current　control　device　for　single-phase　grounding　fault　in　distribution　network　have　many　problems,　such　as　complex　topology　structure,　limited　installation　position,　and　difficult　DC-side　power　supply.　Based　on　a　new　type　of　two-phase　direct-mounted　device,　this　paper　presents　a　flexible　adjustment　and　control　method　of　grounding　fault　current　of　distribution　network　without　power　supply　on　DC-side,　which　can　solve　the　above　problems.　The　two-phase　directly　mounted　device　requires　fewer　bridge　arms,　and　the　current　limiting　inductor　can　be　reused　as　a　voltage　divider.　Thus　the　overall　structure　can　be　simplified.　It　is　easily　installed　in　the　feeder　without　the　need　to　be　connected　to　the　distribution　network　through　the　grounding　transformer.　It　can　realize　the　distributed　regulation　of　grounding　fault　current.　According　to　the　principle　of　“perpendicular　voltage　and　current”,　the　total　grounding　fault　compensation　current　is　allocated　between　the　two　bridge　arms　of　the　two-phase　directly　mounted　device　when　adjusting　and　controlling　the　grounding　fault　current.　The　DC-side　of　the　device　can　be　free　of　power　supply.　In　addition,　the　soft　grid-connection　method　and　the　charging　control　principle　of　“voltage　and　current　in　the　same　phase”　are　the　early　guarantee　for　the　effective　regulation　of　grounding　fault　current　of　the　two-phase　direct-mounted　device.　Finally,　the　feasibility　and　effectiveness　of　the　proposed　method　are　verified　by　Matlab/Simulink.　©2023　Chin.Soc.for　Elec.Eng.