With the rapid development of science and technology, the complexity of national defense equipment is increasing, it is difficult to complete the security task reasonably and effectively by the military security capability. Therefore, this article gives an overview of commercial aircraft maintenance system, and provides recommendations for defense equipment support based on experience accumulated during commercial aircraft maintenance system construction from Civil-Military Integration point of view. The relevant technologies of civil aircraft maintenance system, i.e., the requirement analysis, health monitoring and management technology, maintenance strategy, support mode, and so on, are integrated into the field of defense equipment investigation, which are applied to perfect the technology and support mode of defense equipment.