Abstract:The waterproof and drainage design of underwater engineering is the key in the engineering design. Relying on the practical engineering design, the waterproof and drainage design of underground engineering is studied. The key technology of underwater engineering design is put forward. And fully considering the design service life of the existing waterproof materials, the waterproof remedial measures for the failure of the existing waterproof facilities are proposed. It has the important guidance and reference significance for similar waterproof and drainage design of underground engineering, which hope to promote the progress and development of underwater engineering construction.