Hypochlorous acid generating device

The embodiment of the utility model relates to the technical field of hypochlorous acid generation devices, and discloses a hypochlorous acid generation device which comprises an electrolytic bath, a three-way valve and a backflow prevention assembly. Wherein the electrolytic bath is provided with a gas outlet end; a first connector in the three-way valve is communicated with the gas outlet end, a second connector is used for being communicated with external water, and a third connector is used for discharging a mixture of chlorine and water; the backflow prevention assembly comprises a tubular one-way valve body, a connecting pipe and a first sealing piece, the first sealing piece is connected between the air outlet end and the connecting pipe in a sealing and abutting mode, the one-way valve body is provided with a disc body, and one end of the disc body abuts against the end face, away from the air outlet end, of the connecting pipe; the outer circumferential face of the disc body and the outer circumferen