Waterborne algae removal device

The invention provides a waterborne algae removal device. The waterborne algae removal device comprises a suction device used for sucking algae containing water, an algae gathering device arranged at the downstream of the suction device and used for gathering algae in the algae containing water discharged by the suction device, a dewatering device for dewatering the algae collected by the algae gathering device and put into the dewatering device, and a ship where the suction device, the algae gathering device and the dewatering device are arranged. The waterborne algae removal device has a compact size, has very great flexibility, is particularly suitable for small-size lakes, reservoirs and landscape waters, and has the characteristics of a simple structure, low cost, operation convenience, good algae removal effects, no secondary pollution to the water area.