Abstract: Drop test is necessary for undersea weapons before approval. At present, there is no uniform standard or specification for drop test of undersea weapons in China, so the drop test has to accord with the testing experiences of initiating explosive devices, warheads or other weapons, and consider the requirements for certain undersea weapon. As a result, the prototype state, sample number, as well as simulation and settings of experimental conditions, are quite different. This paper reviews relevant national and international standards, considers the specific drop test processes of various undersea weapons, and presents the test principles, methods or requirements for prototype state, drop surface, drop direction, sample number, drop height, and pretreatment, in order to fully simulate and reflect the circumstances and events in applications of the equipment, and to provide a reference for carrying out undersea weapon drop test