Oiltank and back seat for booster cycle

The utility model relates to an oil tank back seat for a booster cycle. The utility model comprises a cycle seat and a back. The utility model is characterized in that the back is a flat canister, the top and the bottom of the flat canister are provided with nozzles, the nozzle on the top is provided with a cover, two side walls of the flat canister are respectively provided with a nut which is connected with a cycle frame by screws, and the cycle seat is fixed on a steel channel beam of the cycle frame by a clamp hoop which is arranged under a seat plate. An oil tank is designed slickly into the back of the cycle seat by the utility model, the problem of the mounting position of the oil tank can be solved, and the utility model causes the oil tank to have larger capacity and to be very beautiful. Thus, the utility model has obvious superiority compared with a suspended type oil tank of the existing booster cycle.