To provide the binding of boots for a snowboard capable of being joined to both side parts of a shoe tip by being suited to the boots of various sizes whose horizontal width of the shoe tip part is respectively different, being suited to the left and right boots by the left and right same shape and reducing a manufacture cost.

A pair of shoe width reception pieces 8 are freely retractably attached to the side front of the center line of the snowboard and is fixed to a base plate 3 through an oblong hole at a selected adjustment position. Also, a shoe heel supporting piece 20 is disposed freely slidably back and forth to the base plate 3 and is fixed to the base plate 3 through the oblong hole 28 at the selected adjustment position.