The work aims to design a warhead sealed package with the functions of moisture-proof sealing, support and stocking, convenient handling and electrostatic prevention. According to the technical requirements for the design of some warhead, the packaging materials were selected and the packaging structure was optimally designed. Simulation analysis and experimental verification were carried out to comprehensively check whether the various performances of sealed package met the technical requirements of the design, and whether the product would not be rusted or have function failure within the life cycle. The test results showed that, the sealed package of warhead met all kinds of performance and technical requirements. Such design can be applied to the sealed package of warhead and provide reference for the design of sealed package of other similar products.