A sanitary washing device, includes: a nozzle including a water discharge port and configured to squirt water from the water discharge port to wash a human private part; a water conduit configured to guide water supplied from a water supply source to the nozzle; a sterilizing water supply part provided midway along the water conduit and capable of producing sterilizing water; a flow rate adjusting part configured to adjust flow rate of water flowing in the sterilizing water supply part; a flow state varying part configured to vary flow state of water flowing in the water conduit; and a controller configured to control the flow state varying part to vary the flow state of the water flowing in the water conduit when producing the sterilizing water by the sterilizing water supply part in a state in which the controller 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.