A bidet device is disclosed. The bidet device according to the present invention comprises: a steaming chamber housing contained in a bidet tank coupled to one side of a seat on which a user sits； a fumigation nozzle connected to the steaming chamber housing so as to spray medicinal steam； and a steam generator for generating medicinal steam for fumigation sitz bath and then spraying, through the fumigation nozzle, the medicinal steam together with an medicinal extract generated during the streaming process, whereby fumigation steam from steamed medicinal materials can be ejected into a toilet bowl.
