Marine water treatment device

The utility model discloses a marine water treatment device which comprises a bearing plate, the top of the bearing plate is fixedly connected with a stirring tank, the center of the top of the stirring tank is fixedly connected with a servo motor, one side of the bottom of the stirring tank is fixedly connected with a first pump body through a pipeline, and the top of the first pump body is fixedly connected with a primary treatment tank through a pipeline. The top of the primary treatment tank is in threaded connection with a screw cap, and one side of the bottom of the primary treatment tank is fixedly connected with a second pump body through a pipeline. Large impurities in a water body can be filtered and intercepted by arranging a large-aperture filter screen, and small-particle impurities in the water body can be filtered and intercepted by arranging a small-aperture filter screen; by arranging the first reverse osmosis membrane and the second reverse osmosis membrane, permeation purification can be ca