Abstract: 2，4，6‑trinitro‑3，5‑dihydroxyfluorobenzene and its energetic ion salts were prepared using 3，5⁃dimethoxyfluorobenzene and several nitrogen⁃containing organic bases as raw materials. The structures of these compounds were characterized by nuclear magnetic resonance， mass spectrometry， elemental analysis， and X⁃ray single crystal diffraction. The density of 3，5⁃dimethoxyfluorobenzene and its energetic salts （some compounds have crystal density） was measured using a true density meter， between 1.749~1.936 g/cm³； The thermal stability of these compounds was studied using a comprehensive thermal analyzer， and it was found that their thermal stability was poor. The thermal decomposition temperature was between 167.64~200.68 ℃； The detonation performance of these energetic compounds was predicted using EXPLO5 v6.01 program. The results showed that their detonation velocities were 7.63~8.45 km/s， and detonation pressures were 23.4~32.3 GPa； In addition， through impact sensitivity testing and friction sensitivity testing experiments on these energetic compounds， the results showed that the impact sensitivity values of 2，4，6⁃rinitro⁃3，5⁃dihydroxyfluorobenzene and its energetic ion salts were 16~32 J， and the friction sensitivity were 32~160 N. The above results showed that 3，5-dimethoxyfluorobenzene and its energetic salts had high density， good detonation performance， and high sensitivity values， but their thermal stability was poor and they had a lower thermal decomposition temperature.