A novel nitrogen-rich energetic compound 4-amino-1,2,4-triazole dinitroguanidine salt (4-ATDNG) was synthesized and fully characterized. Its crystal, thermal behaviour, and detonation properties were investigated by X-ray diffraction, thermogravimetry-derivative thermogravimetry-differential scanning calorimetry (TG-DTG-DSC) coupling system, and the Kamlet-Jacobs equation. In view of the obtained values such as the critical temperature of thermal explosion (T b , 186.368C), entropy of activation (DS 6 ¼ , 60.22 J mol À1 k À1 ), enthalpy of activation (DH 6 ¼ , 143.24 kJ mol À1 ), free energy of activation (DG 6 ¼ , 116.34 kJ mol À1 ), detonation pressure (P, 29.78 GPa), detonation velocity (V, 8.28 km s À1 ), and impact sensitivity (h 50 ¼ 135 cm), it is proposed that 4-ATDNG possesses excellent thermal stability and has the potential to be a useful energetic material in the future.