The invention provides a marine floating type platform narrow pipe wind-concentrating generating system, relates to significant core technologies of comprehensive subjects including main body module modeling, member combination, load bearing and buoyancy force, fluid change, narrow pipe effect, infrastructures, aerodynamics, structural mechanics, turbine effect, electric energy conversion and the like and belongs to the technical field of marine floating type platform wind power generation systems. The marine floating type platform narrow pipe wind-concentrating generating system comprises a narrow pipe wind-concentrating generating subsystem and a marine load-bearing platform subsystem. The narrow pipe wind-concentrating generating subsystem consists of a base platform, a ring beam, a narrow pipe body, a main column, a wheel type support, an intersection fixing seat, a lightning rod, a hedge control assembly, a suction window assembly, an induced air barrel body, a wind power engine, a wind power engine outer casing, a generator, an attached column, a wind-concentrating inlet, a protective screen, a circular arc column, a spherical body, a platform, a hydraulic seal cover and the like. The marine load-bearing platform subsystem consists of a floating platform deck, a safety wall A, a hub support, a partition layer, a connecting piece, a sinking block, an inhaul cable, a flat wave plate, a floating barrel body and a manhole.