To achieve preventing the shelf boards for a boot cupboard from being damaged by raising and forming an integrated soft rib on the top side of front edge of a hollow boarding material and by installing the longitudinally crossing ribs inside the boarding material.

This shelf board is made of plastics integrated with a soft rib 1 raised and formed on the top side of front edge of a hollow boarding material 2. Inside the boarding material 2 is hollow, and a dozen ribs 3 are installed in it to bridge toward thickness and to cross longitudinally. At the front and rear sides on the back of the hollow boarding material 2, a recessed part 5 into where a dowel is placed is each made to cross longitudinally as well. This shelf board can easily be made by integrally extruding the plastics for soft rib 1, recessed parts 5 and ribs 3 simultaneously. The soft rib 1 becomes a stopper against slipping out of stored items, while because of its softness, it can hardly be broken by putting the items to be stored thereon and by taking out the stored items therefrom. Because of its flexibility at dusting off and the like, it is not obstructive for cleaning.