After the excavation of the revetment foundation pit, dewatering is difficult and expensive, and cannot meet the requirements of the construction period. In order to reduce the adverse effects of groundwater on the construction of the revetment structure, meet the requirements of the construction period, and ensure the safety and quality requirements of the revetment construction, the revetment structure must be optimized. According to the on-site excavation situation, some methods of optimizing underwater construction are determined through analysis. The underwater excavation is reduced as much as possible, the time between excavation and backfilling is reduced, and the concrete foundation on the left bank of the revetment is optimized to be backfilled with block stones, thus solving the problems encountered in on-site construction. The optimization of this scheme solves the difficulty of precipitation, ensures the construction safety and speeds up the construction period, uses local materials to reduce environmental pollution, and has achieved greater economic and social benefits, providing reference for similar projects.