The invention relates to a gas-water integrated three-way common valve. The gas-water integrated three-way common valve comprises a guide tube, a valve body arranged on a lower end of the guide tube and plug bodies arranged in the guide tube and extending into the valve body; the guide tube and the valve body are of an integrated structure and arranged vertically; three ports are uniformly arranged on a side edge of the valve body and inner sides of the ports are inclined; three plug bodies in total are arranged, and each plug body comprises a driving shaft on an upper end thereof and a rubber plug connected to a lower end of the driving shaft; each rubber plug is arranged relative to each port; a lower end of each rubber plug is wedge-shaped and a sectional area of the bottom end of the rubber plug is greater than the rear of the corresponding port; and a sectional inclination angle of each rubber plug is equal to an inclination angle of the inner side of each port. The gas-water integrated three-way common valve has the advantages that the three ports of the gas-water integrated three-way common valve are uniformly arranged on the side edge of the valve body, and therefore, liquid flow rates of the three ports are the same without causing non-uniform scouring to the plug bodies, and further, the structure is reasonable in design and the service life is long.