Abstract: [Objectives]The open area of luxury cruise superstructure has complex spatial layout and appearance modeling, and accurate simulation of wind load and flow field characteristics in the open area is crucial to guide cruise design. [Methods] Adopt realizable k-ε turbulence model in Reynolds time average method and substructure like method were used to simulate the flow field characteristics of the whole cruise ship and the open area of the superstructure, and wind tunnel experiments were carried out to verify them. [Results]The results show that the substructure like method proposed in this paper can accurately pre simulate the flow field characteristics in local areas. The appearance, spatial layout and wind direction angle of the open area of the superstructure have an important impact on the flow field characteristics of the cruise ship. Large area negative pressure and air flow separation are very easy to occur in the bow and stern of the cruise ship and the open area of the superstructure. [Conclusions]When designing the cruise ship, the overall shape of the superstructure should be streamlined, and the height drop and spacing between adjacent structures in the open area should not be too large. The research has a guiding role in cruise ship design.