Using 1，4-dihydrazide succinate as raw material， 1，2-bis（3，3"-dinitroamine-1H-1，2，4-triazol-5-yl）ethane monohydrate （1） was synthesized by the one-pot “MNNG ring method”. And the synthetic conditions of this reaction were carefully optimized. The corresponding 1，3-propanediamine salt （2） was obtained through the reaction of compound 1 and 1，3-propanediamine. The detailed single crystal structure of compound 2 was determined by X-ray single crystal diffraction. FT-IR， NMR and elementary analysis were used to characterize the structures of compounds 1 and 2. Moreover， the thermal properties of compounds 1 and 2 have been studied by TG-DSC. The results showed that the initial decomposition temperature of compounds 1 and 2 are 184 ℃ and 214 ℃， respectively. The main detonation parameters of compounds 1 and 2 were calculated by using EXPLO5 （v6.02） software. The calculated detonation velocity of compound 1 is 8602 m·s^-1 and its calculated detonation pressure is 28.10 GPa. For compound 2， the calculated detonation velocity and detonation pressure are 7740 m·s^-1 and 19.10 GPa， respectively. Furthermore， their mechanical sensitivities were tested by BAM sensitivity test. The impact sensitivity of compound 1 is 35 J and its friction sensitivity is 108 N. The impact sensitivity of compound 2 is greater than 40 J， and its friction sensitivity is more than 360 N.