The prediction of remaining useful life for T/R module is significant for equipment support personnel to master current health status of equipment and to improve the level of repair and maintenance. The fault characteristics of T/R module were analyzed and the indices reflecting the degradation process of T/R module were screened out, the remaining life prediction result of T/R module was obtained by calculating the remaining life information and weight of each index. The practicability and effectiveness of the prediction method were demonstrated by experimental example analysis and comparison. The results can provide theoretical guidance for predicting the remaining life of electronic equipment, and it is significant for planning maintenance resources reasonably and improving battle effectiveness of equipment.