2-Nitro-2-azaadamantane-4, 8-diyl dinitrate, a new energetic cage compound, was synthesized with a total yield of 27% from bicyclo[3.3.1]nonane-2, 6-dione via hydrazonation, elimination, epoxidation, cyclization, acetylation and nitration.Nitric-sulfuric acid was applied as nitrating agent and nitration conditions such as molar ratio between H₂SO₄ and HNO₃, reaction temperature and reaction time were investigated and the optimal reaction conditions was as follows:n(H₂SO₄):n(HNO₃)=1:2 and 60 ℃ for 4 h with yield of nitration reaction as 81%.The thermal stability of target product was studied by thermogravimetry(TG) and differential scanning calorimetry(DSC).The detonation properties were predicted by Kamlet-Jacobs formula.Results show that the compound starts to decompose at 170.0 ℃ and the decomposition peak temperature is 193.7 ℃, and the density, detonation velocity, detonation pressure are 1.71 g·cm^-3, 5780 m·s^-1, 11.0 GPa, respectively.