The invention provides a method for rapidly establishing and combining a combined high-speed naval ship. The naval ship is divided into a deck module and navigation power modules and the deck module and the navigation power modules are connected through V-shaped groove structures. In terms of design of the deck module, ship-mounted weapons for different fighting purposes are configured according to different ship types; in terms of design of the navigation power modules, independent ship design is adopted and the navigation power modules are used for supplying navigation power and electric energy to the deck module. Different numbers of navigation power modules are configured and rapidly combined with the deck module, so that high-speed naval ships with different water discharging amounts and different fighting functions are established. The establishing and combining method comprises a method for establishing a workflow type dock, a method for establishing the deck module, a method for establishing the navigation power modules, a method for combining the deck module and the navigation power modules and a method for repairing and replacing the navigation power modules.