The present invention provides a dishwasher which permits cost reductions while enabling increased strength. A reinforcement member is mounted between pillars, which are erected in the corners of a machine chamber, and a functional part for executing washing and rinsing is fixed to the reinforcement member. Here, an example of the functional part is a washing pump for delivering washing water. Furthermore, another example for the functional part is a connecting part for connecting electrical wiring between a control box and a detergent supply device or a booster or the like.