N, N-bis((3, 5-dinitro-1H-1, 2, 4-triazol-1-yl)methyl)nitramine (BDNTMN) was synthesized via diazotization, nitration and N-alkylation etc reactions using 3, 5-diamino-1, 2, 4-triazole (DAT) as starting material. The structures of each compound were characterized by means of ¹H NMR, ¹³C NMR, IR, MS and elemental analysis etc means. The main thermal properties of BDNTMN were analyzed by DSC and TG. The physicochemical property and detonation performance of BDNTMN were predicted by Gaussian 09 and Kamlat-Jacbos equations. Results show that BDNTMN has two thermal decomposition peaks at 170.4 ℃ and 254.1 ℃, respectively. The density, detonation velocity and detonation pressure of BDNTMN are 1.95 g·cm^-3, 9.03 km·s^-1 and 38.7 GPa, respectively, which are better than those of RDX.