Including transportation by sea,the multi-modal system is the future direction of spent fuel transportation. In the early stage of construction,coastal nuclear power plants have planned,designed and built heavy cargo wharf for large equipment transportation. Spent fuel can be transferred from the heavy cargo wharf in the multi-modal system. In order to satisfy the requirement of transferring spent fuel,we combine with the berthing and unberthing conditions of ships to carry out the comprehensive evaluation,sort out the modification content of nuclear power plant wharf after investigation and analysis. The results show that nuclear power plants should focus on physical protection of nuclear materials and ship berthing conditions and package loading technology to carry out modification of wharf by centering on wharf plane scale and structure,operation technology,auxiliary production facilities,and management system. To ensure that spent fuel can be shipped out on time in the future.