In order to improve mechanical properties and combustion performance simultaneously，novel combustible cartridge cases were manufactured by adding energetic fibers as reinforcement component. The mechanical properties were characterized by compression and tensile strength，and combustion performance was evaluated by closed-bomb and gun charge cartridge tests. Results show that these novel combustible cartridge cases have good mechanical properties，and combustion performance is also improved. With increasing of the energetic fibers content，the ignition time and burning-off time are shrunk more and more，and the burning rate and impetus of the case are increased gradually. Compared with the original ones，fewer solid residues and combustible gas are found in gun charge cartridge tests，which means adding energetic fibers could decrease the shooting features.