The invention discloses an ocean wind power plant environment corrosion simulation experiment device. At present, the ocean environment real field corrosion and protection experiments are urgently required for offshore wind power foundation support structure and electric equipment material selection. The ocean wind power plant environment corrosion simulation experiment device comprises a simulation experiment pool, wherein five simulation regions and a plurality of sample hanging piles in longitudinal arrangement are arranged in the simulation experiment pool; the five simulation regions are respectively a sea mud region, a full immersion region, a tidal range region, a sputtering region and an atmosphere region in sequential arrangement from bottom to top; a water inlet, a water outlet and a silt discharging opening are formed in the pool wall of the simulation experiment pool; a plurality of sample hanging fixing clamps in sequential arrangement from top to bottom are arranged on the sample hanging pile; the device also comprises an instrument box and an operation and control system; the instrument box is used for measuring the corroded data of sample sheets and the protection effect; the operation and control system is used for controlling the environment of the five simulation regions. The device provided by the invention provides accurate design data for the material selection and anti-corrosion technology for the electronic equipment and the wind power plant environment foundation support structure; the convenience is brought to a wind power plant designer and an electric field management and application person.