Abstract: With the wide use of low-light-level,infrared, laser and image processing technology in the modern weapon systems,the optoelectronic weapon systems are developed rapidly and the reliability of the military optical systems, which will directly effect the combat capability and the requirment for the logistical support etc, will catch more and more attention of the people. The development, management and design of the reliability for the military optical systems abroad are introduced. The function and the stress that the other countries laid on the reliability of the military optical systems can be seen from the introduction. With the knowledge of the importance of reliability, when drawing up technical plan and emphasizing the advanced performance of the military optical systems,we will pay more attention to the reliability so that we raise the completeness of our military optical systems and lower the cost of the logistical support.