Aiming at the problem of accurate evaluation of warship support capability, the evaluation index system of warship support capability in full life cycle and the calculation model of each index are established. The evaluation index system of warship equipment support capability is constructed, including the calculation model of various indexes. The research strategy, basic data structure and data processing method are formulated. A warship system is selected for case calculation. The results show that the simple and practical evaluation index system of warship equipment support capability and the simple calculation model of various indexes can be used for the support capability evaluation of warship related systems.