Insitu structural health monitoring (SHM) sensor system is necessary for the longterm storage cryogenic spacecraft tanks. In this paper, a PZT Lambwaves based SHM sensor system is designed for a longterm storage cryogenic tank. A series of tests have been conducted, First, the durability of different epoxy adhesives under cryogenic temperature was considered over a long period of time. Then, the high strain performance of different epoxy adhesives under cryogenic/room temperature was investigated by lap shear strength tests. Subsequently, the storage conditions functionality of different PZTepoxy sensor systems was investigated by Lambwave propagation tests under vibration temperature environment (room temperature~-180 ℃). The experimental results demonstrated that the developed sensor system can bear high strain and longterm under cryogenic/room temperature on a longterm storage cryogenic tank.