To provide a drain board and a drain board bed which can solve a problem that an intimate contact area with an installation surface and a wall surface is made large when a housing is used as it is, and that air vents on the installation surface and the wall surface are sealed and ventilation is interrupted even when the housing is stored in a case having a plurality of air vents.

The drain board stores a housing and is installed on the floor surface of a closet or the like, and a filler is charged into a bag body having ventilation. The rectangular parallelepiped body has a housing space for the housing inside, and each of the surfaces is provided with air vents. Then an opening is provided to the front surface used for loading and unloading the housing and the bottom surface is made a raised bottom. Bottom air vents which are connected to the bottom surface are provided to at least the lower parts of both sides.