Two new explosives， C₈H₂₄N₄（ClO₄）₄ and C₈H₂₄N₄（NO₃）₄?2H₂O， were prepared from 1，4，7，10-tetranitrocyclododecane by salt formation with nitric acid and perchloric acid respectively， which are expected to be used as emergency reserve materials of weapons in emergency wartime. The structures， thermal properties， and detonation performances of the target products were studied through single crystal X-ray diffraction， infrared spectroscopy， elemental analysis， differential thermal analysis， thermogravimetric analysis， and EXPLO 5.0 program. The results indicate that C₈H₂₄N₄（ClO₄）₄ crystallizes in the orthogonal crystal system， Pcc2 space group with a crystal density 1.968 g?cm^-3. The crystal of C₈H₂₄N₄（NO₃）₄?2H₂O is a dihydrate with a crystal density of 1.642 g?cm^-3， which belongs to the monoclinic crystal system P2₁/n space group. The thermal decomposition peak temperatures of C₈H₂₄N₄（NO₃）₄?2H₂O and C₈H₂₄N₄（ClO₄）₄ are 293.2 ℃ and 284.1 ℃， and activation energies are 131.76 kJ·mol^-1 and 195.18 kJ·mol^-1， respectively. Compounds C₈H₂₄N₄（NO₃）₄?2H₂O and C₈H₂₄N₄（ClO₄）₄ exhibit excellent detonation properties， showing very promising performance values （C₈H₂₄N₄（NO₃）₄?2H₂O， V=8058 m?s^-1， P=24.0 GPa； C₈H₂₄N₄（ClO₄）₄， V=8680 m?s^-1， P=36.2 GPa）. Moreover， the impact sensitivities of C₈H₂₄N₄（NO₃）₄?2H₂O and C₈H₂₄N₄（ClO₄）₄ are 36 J and 33 J， respectively， and their friction sensitivities are higher than 360 N.