Abstract: This article introduces an intelligent analysis method to distinguish the wiring of multi-function intelligent watt-hour meter, by obtaining the internal data such as active power, reactive power and power factor, according to the computed phase angle, and judge the wiring based on different load types and.This method can judge the multi-function intelligent watt-hour meter wiring quickly need not to use measure meter, to improve the work efficiency and to ensure the correct measurement of electricity charges and fair trade.