PROBLEM TO BE SOLVED: To provide a bath board which allows a user to easily access from any direction even when the user strides over a side wall of a bathtub in a standing state and allows a user with insufficient grip strength to safely and easily put a part of his/her own weight thereon.SOLUTION: The bath board is composed of: a tabular support base material placed on an upper face of bathtub side walls a tabular rotation member attached on the support base material so as to be rotatable and a knob attached on an upper face of the rotation member. On an upper face of the knob, a generally flat support face is formed for supporting a palm of a user.SELECTED DRAWING: Figure 6