5, 5′-Dinitramino-3, 3′-bi[1.2.4-triazolate] carbohydrazide salt(CBNT)was synthesized via ring formation reaction, nitration reaction and salt formation reaction using oxalic acid and aminoguanidinium bicarbonate as starting materials.Its structure was characterized by IR, NMR and elemental analysis.The thermal behavior of CBNT was studied by differential thermal analysis /thermogravimetry (DTA-TG)and its impact sensitivity and friction sensitivity were measured.Results show that the temperature of exothermic decomposition peak for CBNT is 229 ℃.Its impact sensitivity (H₅₀)is 89 cm, and friction sensitivity in explosion percentage is 4%-8%.