In order to avoid the limited and scattered factors,a comprehensive index system and method for evaluating air defense missile infrared camouflage capabilities is proposed. Based on the contradiction between reconnaissance and camouflage,it analyzes the air defense missile infrared camouflage capabilities from infrared reconnaissance capability,infrared stealthy capability,infrared deceiving capability,environmental support capability,staffing capability,maintenance capability and organizational management capability. The weight of each index is determined by Entropy method. The WRSR method is proposed to split the assessment results. Finally,through an example,the system and method are verified.