To provide a dishwasher capable of reducing the number of advancing/retreating times of a stopper.

A control part 111 is provided with a function of storing whether a valve element of a switching unit is positioned in the upper part or the lower part of the stopper in RAM 132. The control part 111, when starting the washing operation in a lower washing mode with the valve element positioned in the upper part of the stopper, does not turn on the solenoid 61 and starts the driving of the pump motor 21. When the washing operation is started in a upper/lower washing mode with the valve element positioned in the lower part of the stopper, the driving of the pump motor 21 is started without turning on the solenoid 61.