A sanitary washing device including: a nozzle discharging water toward a human body private part； a water guide part including a pipe line reaching from a water supply source to the nozzle, and guiding water supplied from the water supply source to the nozzle； a vacuum breaker provided on a path of the water guide part, and taking air into the pipe line when water does not flow in the water guide part； and an ultraviolet irradiation part provided between the vacuum breaker and the nozzle on the path of the water guide part, and including a flow channel flowing water and a light emitting part irradiating ultraviolet rays to the water flowing in the flow channel is provided.
