4-hydroxy-3，5-dinitropyrazole（H-DNOP， 2） was synthesized from 3，5-dinitro4-bromopyrazole（1） by hydrolysis and neutralization reaction. Three kinds of ionic energetic compounds （3-5） of DNOP were designed and synthesized by using its acidity. The structures of compounds 3-5 were characterized by FT-IR， NMR spectrum， elemental analysis as well as single-crystal X-ray diffraction， and their thermal stabilities were investigated by differential scanning calorimetry and thermogravimetry （DSC-TG）. The maximum decomposition temperature of hydrazine salt （3） was T_d=210.3 ℃. The impact sensitivity and friction sensitivity were measured by BAM method， while the detonation parameters were predicted based on the isodesmic reactions and the Kamlet-Jacobs equation. The results show that the measured impact sensitivity and friction sensitivity of the threecompounds 3-5 are all 36 J and 360 N， which are less sensitive than those of TNT（IS=15 J，FS=353 N） and RDX（IS=7.4 J，FS=120 N）. The theoretical detonation velocities of the three compounds are 7758-8288 m·s^-1， and the detonation pressures are 26.06-29.96 GPa， respectively.