Abstract: At present, the abnormal line loss search in the low-pressure platform area generally exists the problem of long and complicated search process, which brings great difficulty to the line loss management personnel to reduce the loss. This paper proposes a set of comprehensive relevant high damage area and negative loss management area, high loss area are given respectively and negative damage area of abnormal causes and symptoms, and provides a quick surveys, positioning according to the practical case, the method to solve the problem of abnormal, for low voltage distribution circuit area provides a reliable line loss management.