To provide a ski board for easy transportation and storage characterized in collapsibity to the side of the sliding surface by two or three divisions of ski board.

In a divided ski board connected by respective hinges so as to be collapsible to the side of sliding surface, a biaxial hinge is used as the hinge and two axes 2A and 2B are dislocatedly arranged to the inside so that the undersurface of a connecting body 3 and both wing boards become flush. The connecting body 3 is provided to be one piece for each one connection part, and the width thereof is made 1/2 of the width of the sliding surface, and the respective upper and lower side surfaces are provided so that a part of cylindrical surface making the center of the axis of the biaxial hinge forms a plane surface, and it has the same width as the width of the sliding surface of the ski-board connecting part, and a front wing board 4A and a rear wing board 4B are provided so that the width-directional end part facing the connecting body 3 forms a circular shape toward the inside and is brought into contact with the connecting body 3, and both connecting end parts of the ski board bestride the surface adjacent thereto and are covered with a front and rear fixing plates 6A and 6B respectively.