Abstract: At present, the domestic AP1000 nuclear island dome is assembled in the surrounding area of the nuclear island, and it is restricted by the site and traffic constraints, and the program is not universal. According to the needs of the whole assembly, based on the dome transport bracket, road transport vehicles and the analysis of the feasibility of the scheme, the optimization of the integration of the dome assembly site and module assembly site is proposed, to save space and cost and shorten the construction period while uphold the AP1000 modular construction concept at the same time, and to provide new ideas for the follow-up of AP1000 nuclear island dome assembly.