Disclosed is an oil-spraying device. The oil-spraying device according to the present invention comprises: a casing unit equipped with an entrance-and-exit opening whereby a user can enter and exit； a spray unit which is fitted on an inside surface of the casing unit and sprays oil onto the skin of the user inside the casing； and a skin discerning means for differentiating between a covering on the user and the skin exposed outside the covering. The skin discerning means is used to distinguish between the user's skin and the area where the covering is being worn, such that oil can be selectively sprayed onto just the user's skin by means of the spray unit.
