Abstract: A bumper unit of a vessel for leisure according to the present invention includes a hull; a bumper housing that is fixed to the hull and formed so that its one side is opened; a bumper arranged at the bumper housing to be selectively expanded/contracted by a working fluid; a driving module supplying the working fluid to the bumper; and an opening/closing module opening/closing the bumper housing whose one side is opened. Therefore, the bumper is protruded outside the hull by the use's manipulation when the vessel comes alongside the pier, which may alleviate shocks exerted to the hull, and the bumper is retracted inside the hull, which prevents the outer appearance of the vessel from being spoiled.