Water bicycle

The invention discloses a water bicycle, which relates to the technical field of water surface sports equipment and comprises a buoyancy platform main body rack, a steering rudder mechanism is arranged at the front end of the top of the buoyancy platform main body rack, a seat is fixedly connected to the middle area of the buoyancy platform main body rack, and a power chain fluted disc mechanism is arranged below the seat. An oar movement mechanism is arranged at the other end of the buoyancy platform main body rack; a buoyancy platform main body rack is fixedly connected with a steering rudder support, a steering rod is rotationally connected to the steering rudder support, a rudder plate is fixedly connected to the lower portion of the steering rod, and the first adjustable rod and the outer edge fixed type inner arc bearing are indirectly driven to swing through an auxiliary rod by sitting on a seat and stepping on a power chain fluted disc mechanism. The outer edge fixed type inner arc bearing pushes the