The invention discloses a power distribution line fault positioning method. Data information of existing scheduling automation, distribution network automation, measurement automation systems and thelike is sufficiently utilized, and acquired data is subjected to comprehensive analysis to rapidly reduce a power distribution line fault range, so that a fault position is rapidly and accurately positioned. The power distribution line fault positioning method disclosed by the invention is simple in positioning process and feasible; a positioning result of the fault position is high and the methodis convenient for wide popularization and application.