A sanitary washing device (100), includes: a nozzle (473) including a water discharge port (474) and configured to squirt water from the water discharge port to wash a human private part a water conduit (20) configured to guide water supplied from a water supply source (10) to the nozzle a sterilizing water supply part (450) provided midway along the water conduit and capable of producing sterilizing water a flow rate adjusting part (471) configured to adjust flow rate of water flowing in the sterilizing water supply part a flow state varying part in the form of a pressure modulator (460) configured to vary the flow state of the water flowing in the water conduit and a controller (405) configured to control the flow state varying part to vary the flow state of the water flowing in the water conduit to provide pulsation or acceleration of the water in order to improve the cleaning of the different parts by increasing temporarily the velocity of water flow, while the controller further controls the flow rate adjusting part to make the flow rate of the water flowing in the sterilizing water supply part lower than maximum flow rate.
