The overall layout design of 3 500 t self-propelled jack-up offshore wind turbine installation platform is explored. According to the main parameters of the platform, the key equipments such as crane, jacking system, and propeller are selected for innovative layout design, and the targeted safety protection layout design is made around the latest effective rules and regulations in terms of firefighting, escape, and anti-collision bulkhead, which can provide reference for the overall layout design of same type of offshore wind turbine installation platform.