In recent years， molecular perovskite energetic materials have emerged as a kind of new-concept energetic materials， offering a new approach to design practicable single explosives for different applications by rational assembling diverse ionic components. Ammonium chlorate （NH₄ClO₃） is commonly used as an oxidizer benefiting from its high oxidizing ability， but its high hygroscopicity greatly limits its application. By mixing sodium chlorate， aqueous ammonia， and triethylenediamine （dabco）， then acidizing the aqueous solution， we have obtained a new molecular perovskite energetic material， （H₂dabco）（NH₄）（ClO₃）₃（DAC-4）. X-ray single-crystal diffraction analysis revealed that DAC-4 possesses an ABX₃-type perovskite structure belonging to the cubic space group Pmm with a crystallographic density of 1.86 g·cm^-3. DAC-4 exhibits exceptional theoretical detonation performances， with detonation heat， velocity， and pressure of 4.91 kJ·g^-1， 8.43 km·s^-1， and 32.6 GPa， respectively. DTA showed that DAC-4 has a decomposition peak temperature of 106 ℃， higher than that of ammonium chlorate （75 ℃）. Moisture absorption experiments demonstrate that DAC-4 remains nearly non-hygroscopic after being stored for near 2 month at relative humidity below 86%， the weight of DAC-4 only increases by 0.18%， much lower than that of ammonium chlorate （30%）.