Conduct an analysis of operational evaluation methods for the six stages of the US military joint objective work cycle. The main steps for the US military to conduct operational evaluation are analyzed from four aspects: operational damage assessment methods, collateral damage assessment methods, ammunition efficiency assessment methods, and re attack suggestions. Suggestions are proposed to strengthen theoretical research on operational evaluation, improve operational mechanisms for operational evaluation, strengthen the talent team for operational evaluation, and enhance the level of information technology construction in operational evaluation. The results indicate that this analysis can provide reference and guidance for our military's organizational combat evaluation.