A dish washer (1), wherein springs (33) used for raising and lowering a door are stored in the columns (6) of a washer body. Since the springs (33) are closed in the columns (6), the aesthetic appearance of the dish washer is improved while a measure for waterproofing the springs (33) is taken. Also, since a space between the right and left side columns (6, 6) can be used as a washing chamber, the size of the washing chamber can be increased. As a result, the dish washer can be reduced in size while maintaining the volume of the washing chamber.