The invention discloses an intermodulation interference locating method, device and system, used for solving the problems of poor intermodulation interference locating precision and poor timeliness in the prior art. The method comprises the following steps: determining interfered information of an interfered area by sweep frequency data, wherein the interfered information comprises frequency and level intensity of an interference signal and position information of the interfered area; determining an area range having the intermodulation interference possibly according to the interfered information and preset base station transmitting power; obtaining frequency group information of the base station within the area range; and judging whether the base station is subjected to the intermodulation interference according to the frequency group information of the base station and the frequency of the interference signal.