1, 3-Di(azido-acetoxy)-2-methyl-2-nitropropane(DAMNP) was designed and synthesized via two-step reactions of esterification and azidonation using 2-methyl-2-nitro-1, 3-pro-panediol as raw material with a total yield of 84.7% and a purity up to 98.3%. Its structure was characterized by infrared spectroscopy (IR), nuclear magnetic resonance (NMR) and elemental analysis. The thermal behavior of DAMNP was studied by differential scanning calorimetry(DSC) and thermogravimetry-derivative thermogravi-metry(TG-DTG). Results show that it has a glass transition temperature at -50.73 ℃ and an exothermic decomposition peak at 227.6 ℃, indicating a better stability. The main properties of DAMNP was tested as following density 1.38 g·cm^-3, impact sensitivity H₅₀ 69.2 cm (falling weight 2 kg), friction sensitivity 4%(pendulum angle 66°).