When　the　fault　occurs　in　the　distribution　network,　such　as　short　circuit　or　disconnection,　the　location　of　the　fault　point　can　be　determined　by　using　the　real　time　fault　information.　And　the　fault　location　method　is　accurate　and　reliable,　which　directly　affects　the　failure　of　power　supply　users,　and　has　a　great　impact　on　the　social,　economic,　and　other　aspects　of　life.　In　view　of　the　difference　of　fault　information　sources　incurrent　distribution　network,　control　area　and　non-supervise　area　of　distribution　are　studied.　The　scope　of　the　study　include　the　data　area　that　has　or　hasn＇t　been　collected　user　electric　energyin　the　non-measurement　and　control　area,　and　the　measurement　and　control　area　that　has　realized　feeder　automation.　The　simulation　results　show　that　the　fault　location　method　based　on　different　information　sources　in　different　regions　has　many　advantages,　such　as　high　fault　tolerance,　short　positioning　time　and　strong　certainty.