The invention provides a positioning method of business clients with electricity utilization abnormity. An electric meter box is used for monitoring N-phase current during electricity utilization abnormity, so an objective of precisely and quickly positioning abnormal business users is achieved. The method comprises following steps that 1, a current measurement device and a GPRS switch is installed in an electric meter box of a business client, and A-phase current, B-phase current, C-phase current and N-phase current are transmitted to a remote main station; 2, the remote main station generates a display frame of specific position information of the business client on a main station computer by use of map software, and displays the N-phase current value corresponding to the electric meterbox by use of circles in different sizes; 3, the main station computer draws connection lines to generate a polygon according to cross points of adjacent circles; and when there is only one polygon orwhen there are multiple polygons, the polygon with the smallest area is the position range of the business client with electricity utilization abnormity and is displayed on the display frame in an amplified manner, and a maintainer measure A, B and C-phase current of the electric meter box of the business client in the place so as to determine the specific position of the business client with electricity utilization abnormity the business client with electricity utilization abnormity finally.