The invention provides a buoy mechanism for marine environment monitoring, and relates to the field of buoys. The buoy mechanism for marine environment monitoring comprises a base, a signal transmitter and a wind speed monitor, a support is fixedly connected to the top face of the base, a solar power generation panel is fixedly connected to the outer surface of the support, an annular water pipe is fixedly connected to the outer surface of the base, a spraying opening is formed in the bottom face of the annular water pipe, a booster pump is fixedly connected to one side of the inner bottom wall of the base, and the input end of the booster pump fixedly communicates with a water inlet pipe. A telescopic mechanism, a connecting pipe and an air bag are arranged. By arranging a booster pump, awater inlet pipe, a water discharging pipe, a spraying opening and an annular water pipe, the problems that organisms are attached to the outer surface of the base for a long time, and the service life of the base is shortened are solved, meanwhile, the base can be cooled, and the service life of equipment in the base is prolonged.