Abstract: This paper establishes a calculation model which excavates data of power users'electricity consumption and power grid operation state and proposes a diagnose method of abnormal electricity consumption metering from the perspective of industry characteristics.By applying evaluation factors to the algorithm model, 10 kV power consumption of a same industry is analyzed and unusual symptoms of individual user's monthly power consumption level is captured.What's more, line loss of related power distribution system is checked. As a result, the range of suspected users are shrunk.By this means, the efficiency of the inspection work is lifted.This paper firstly introduces the model of various evaluation factors, and then chooses more than 300 households power users to analyze, and confirms the validity of the proposed algorithm in the end.