In order to evaluate the service performance of tracked armored combat vehicle transmission, according to the principle of index system construction, starting from the existing tracked armored combat vehicle transmission data from a variety of performance index system data constructed by the existing tracked armored combat vehicle transmission, the service performance evaluation index system of tracked armored combat vehicle transmission components was preliminarily constructed, and at the same time, the overall service performance evaluation index system of tracked armored combat vehicle transmission was preliminarily constructed from a macro perspective by using systematic analysis methods. Finally, the index system was optimized from the perspectives of index correlation and significance. It is concluded that a perfect service performance evaluation index system of tracked armored combat vehicle transmission has been established.