Instant heating water purifier

The utility model discloses an instant heating water purifier which comprises a filtering device, a heating device and a waterway switching device, the filtering device is provided with a raw water inlet, a purified water outlet and a waste water outlet, and the heating device is provided with a hot water outlet; the water path switching device comprises a water path plate and a valve assembly which is arranged on the water path plate and used for switching the communication state of a water path, and the water path plate is integrated with a main discharge outlet, a raw water inlet capable of being communicated with the raw water inlet and a wastewater discharge outlet capable of being communicated with the wastewater outlet; the main discharge port is used for communicating the hot water outlet with a water supply port of the instant-heating water purifier and communicating the purified water outlet with the water supply port; the raw water inlet, the wastewater discharge outlet and the total discharge outl