Abstract: With the aim to improving planned management for the small and medium size shipyard, this paper has a target to build a program, analyzes the problems concerned with shipbuilding planned management, elaborates the pl anning-making process, and relationship of each other, using cumulative load and PERT net gives the corresponding ways to control dynamically and optimize the planning, this study shows that the program of planning opt imzation can make the complex process running in an orderly and systematic way.