Abstract: In order to reduce the influence of microcracks and other damages caused by environmental factors such as force and heat on the performance and service life of polymeric bonded explosives (PBX), an intrinsic self-repairing polymer binder containing DA bonds was designed and synthesized to realize autonomous healing of PBX internal damage according to the structural characteristic of particle filled polymer composites. The research results show that using TAPE-DAPU containing reversible DA covalent bonds as binder, the designed and prepared PBX material has good damage-healing ability. When the damage in PBX is slight, the strength recovery rate of the PBX exceeds 95%, while the repair efficiency is also above 65% for relatively severe penetrating damage.