Abstract: Using lab-prepared 1-methoxycarbonyl-1, 5-diaminotetrazole (MCDAT) as the raw material, high energy materials:1, 5-di(nitramino)tetrazole (DNAT) and its energetic ion salts, i.e. DRDNAT (R=ammonia, hydrazine, hydroxylamine, 3, 4-diaminofurazan, 1, 5-diaminotetrazole, guanyl urea, 1-hydroxyl-5-aminotetrazole and 3, 6-dihydrazinotetrazine) were synthesized via nitrification, acidification, neutralization and metathesis reactions. The structures of target compounds were confirmed by IR spectra, ¹H NMR, ¹³C NMR and elemental analysis. The synthetic methods of DADNAT and DHDNAT were improved by simplifying the operation and increasing the yield. Furthermore, The thermal performance of all compounds were tested by differential scanning calorimetry (DSC), the thermal decomposition peak temperatures of DNAT and its energetic ion salts were 94.07, 192.10, 142.83, 146.71, 261.85, 251.77, 228.62, 198.92 and 189.66℃, respectively. Based on the calculated (CBS-4M) heats of formation and the densities, the detonation parameters such as detonation velocity, detonation pressure and detonation energy of all compounds were computed using Kamlet-Jacobs equations. Results show that DNAT and its energetic ion salts are new high energy density materials.