At present,integrated weapon control system has become a trend of shipborne weapon equipmint integrated design.Facing the new development mode of integrated weapon control with basically unchanged hardware technology and constantly updated software technology,the traditional reliability test and evaluation method is no longer applicable.This paper puts forward the idea of integrated weapon control reliability evaluation and the reliability evaluation method based on Monte Carlo simulation,in order to save the test cycle,improve the test efficiency,and avoid the problems of repeated evaluation and improper evaluation.