In order to solve the evaluation index data processing problem caused by artillery troop command information system campaign, the cloud gravity evaluation method is proposed. Based on battlefield environment, analyze the system at first, use the Analytic Hierarchy Process (AHP) to ascertain the ability index parameter and calculate the cloud model symbol and weighting of every index. The example shows that the method can combine the subjective information with objective information effectively, and integrate the fuzzy ability with random ability to construct the mapping of qualitative and ration. It can effectively resolve the system uncertainty.