The invention discloses a bridge end reinforcement structure and a bridge plate end crack treatment process in the technical field of box girder reinforcement. Aiming at solving the technical problemthat bridge plate end cracks can shorten the service life of a bridge, the structure comprises a bridge plate end, cushion stone, support bases and pier ends; the structure is characterized in that additional cushion stone is arranged between the pier ends and box girder ends and wraps the peripheries of the cushion stone and the support bases. The process comprises the steps of cleaning, crack sealing, slurry pressing, steel bar planting, insertion of steel plates, stress of the steel plates, tying of steel bar mesh sheets, sealing of the support bases, installation of templates and grouting.The bridge end reinforcement structure and the bridge plate end crack treatment process can be used for reinforcing existing bridges and bridges under construction, greatly improve the use safety ofthe bridges and greatly prolong the service life of the bridges. According to the bridge end reinforcement structure and the bridge plate end crack treatment process, by adopting the modes of sealingthe cracks, lifting the steel plates and increasing the stress area, the integrity of the stress of the bottom of the bridge plate end is improved, the occurrence of void phenomena of the support bases is avoided, and the occurrence probability of the cracks is effectively reduced.