The invention provides a deep-sea operating platform. The deep-sea operating platform comprises buoy assemblies, framework assemblies, houses, working tables or recreational facilities, wherein the framework assemblies are arranged on the buoy assemblies, and the houses, the working tables and the recreational facilities are arranged on the framework assemblies. Through the scheme adopted by the deep-sea operating platform disclosed by the invention, the operating platform is arranged to consist of the framework assemblies, the buoy assemblies, and the houses, the working tables or the recreational facilities on the framework assemblies so as to form operating platform modularization, so that the assembling and the manufacturing are greatly convenient; general standard parts are arranged, so that the manufacturing cost is reduced, the individualized requirements can be met, and users can select appropriate assemblies for assembling and using the operating platform according to the situations of the users; therefore, the deep-sea operating platform disclosed by the invention has a wider application prospect.