Water supplementing system and vehicle

The utility model discloses a water supplementing system and a vehicle. The water supplementing system comprises a first liquid pressurization module, a liquid level sensor module and a central control module. The central control module is connected with the first liquid pressurization module and the liquid level sensor module, the liquid level sensor module is used for being connected with a water storage kettle of a washing system of the vehicle, and the first liquid pressurization module is used for being connected between a fuel cell stack of the vehicle and the water storage kettle; the liquid level sensor module is used for sending a first water level alarm signal to the central control module when the water level of the water storage kettle is lower than a water storage calibration value; and the central control module is used for controlling the first liquid pressurization module to start when receiving the first water level alarm signal so as to input water generated by the fuel cell stack into the w