This paper analyzes the shortcomings of the layout of the steel plate cutting workshop in the traditional shipyard, and optimizes the process by value stream Mapping (VSM). Combined with the distribution characteristics of plate parts of cruise production line, aiming at realizing digital shipbuilding, adopting the concept of "steel plate cutting center", the pull batch production mode as the driving strategy, the intellectualization of steel plate warehouse, logistics automation, integration of NC cutting and flexibility of parts sorting as the core essentials, and making full use of automation equipment and information technology. Compared with the traditional cutting workshop, the steel plate blanking cycle is shortened, the per capita work efficiency is improved, and the working environment is safer and environment-friendly.