Life prediction based on the accelerated degradation data analysis is an effective means for the reliability evaluation of intelligent watt-hour meter.In the process of design and manufacture,the early failure problem is inevitably introduced to watt-hour meter.If the early failure analysis is ignored in the accelerated degradation test,the pseudo data will be introduced to life prediction,which will lead to wrong life evaluation and the unnecessary maintenance cost and risk.In this paper,an early failure analysis method based on the accelerated degradation test data is proposed to solve the problem of the accelerated degradation test data processing of the intelligent watt-hour meter.At last,the method is verified by the analysis of a single-phase intelligent watt-hour meter,and the life assessment accuracy of the intelligent watt-hour meter is further enhanced by this method.