Effects Analysis Package(SEEAP) have been developed independently by National Space Science Center, CAS, which comprehensively and systematically integrated the models of space environment and space environment effects that are the international authoritative. What’s more, SEEAP is a powerful tool for the space products designer carried out the work of space environment protection design and fault diagnosis. SEEAP can be used to analysis space radiation environment included electron and proton of radiation belt、solar proton、galactic cosmic ray、heavy ions and atomic oxygen; It can also be used to calculate shielded transmission in all kinds of radiation environment, such as one-dimensional and three-dimensional geometry transmission of the proton and heavy-ion and so on; and it can as well be used to systematically evaluate the influence of space environment on components and materials, such as total dose effects, single event effects, displacement damage effects, the surface charging effects, deep dielectric charging, atomic oxygen erosion effect and so on.