Water mixing tank and water heater

The utility model belongs to the technical field of household appliances, and particularly discloses a water mixing tank and a water heater. The water mixing tank comprises a tank body, a water guide pipe and a breathing pipe; the tank body is provided with an inner cavity, and a water inlet and a water outlet which are communicated with the inner cavity are formed in the tank body; the aqueduct is arranged in the inner cavity, one end of the aqueduct is communicated with the water inlet, and the other end of the aqueduct extends to the water outlet and is spaced from the water outlet; the breathing tube is arranged in the inner cavity and provided with a first end and a second end in the direction from the water inlet side to the water outlet side, the first end is communicated with the water guide tube, and the second end extends upwards to the top of the inner cavity and is communicated with the inner cavity. The water heater comprises the water mixing tank. The water mixing tank solves the problem that th