Aimed at the problem of frequent failure and damage of explosion-proof valve in reclaimer pitching hydraulic system, the structure principle of explosion-proof valve group in original system was analyzed. According to the change of the main parameters of explosion-proof valve, the parameter optimization was carried out and computational fluid dynamics simulation software which was flow simulation was used to optimize the structure of the improved explosion-proof valve group. The explosion-proof valve set before and after optimization were compared in field application. The results show that the optimized explosion-proof valve group can effectively reduce the pressure difference of the explosion-proof valve during operation, thus reducing the misoperation and increasing the service life of the explosion-proof valve, providing reference for the design and application of similar products.