The present invention relates to a new type of a foldable bicycle capable of being easily transported by folding and rolling a front wheel. Moreover, a traditional foldable bicycle cannot be stably fixed when folded to a minimum size, but the foldable bicycle according to the present invention can be stably fixed when folded to a minimum size. Since a tube portion of a head can be attached to the wheel at the most, the height and the direction of the tube can be adjustable.
