Two energetic compounds——4-aminodifurazano[3, 4-b, e]pyrazine (ADFP) and 4, 8-diaminodifurazano[3, 4-b, e]pyrazine (DADFP) were prepared via N-amination reaction and their structures were characterized by IR, ¹H NMR, ¹³C NMR, MS and elemental analysis. The themal properties of ADFP and DADFP were analyzed by differential scanning calorimetry and thermogravimetry techniques. Results show that DADFP melts concomitantly with decomposition at 284.3 ℃. The melting point of ADFP is 218.1 ℃ and its first decomposition temperature is 247.1 ℃, which indicate that ADFP and DADFP have good thermal stability.