In order to obtain a higher energy of the pressure packed composite explosive, the PBX explosive was prepared by coating HMX with energetic adhesive in the water suspension granulation method. The energy and mechanical sensitivity properties of the PBX explosive were studied. The results show that the energy of PBX explosive is significantly higher when using energetic binder than inert binder. Compared with LX-14II prepared by polyurethane thermoplastic elastomer (Estane), JO-13 prepared by gap based ETPE increased the detonation speed by 109 m/s and the detonation heat by 226 kJ/kg (increased by 4.2%); JO-X prepared by BAMO/AMMO based ETPE increased the detonation speed by 182 m/s and the detonation heat by 318 kJ/kg (increased by 5.9%), At the same time, the mechanical sensitivity increases with the increase of energy.