Multi-way valve capable of being proportionally adjusted

The multi-way valve comprises a valve shell, a valve element and a sealing gasket, the valve shell is provided with a valve cavity, the valve shell is provided with a bottom wall in the axis direction, the bottom wall is provided with a valve port communicated with the valve cavity, the valve port comprises a central valve port and a plurality of outer edge valve ports arranged around the central valve port, the valve element is rotatably arranged in the valve cavity, and the sealing gasket is arranged in the valve cavity. The valve element and the bottom wall are sealed through a sealing gasket, a through opening is formed in the position, corresponding to the valve port, of the sealing gasket, a plurality of flow channels which are not communicated with one another are arranged in the valve element, the flow channels are communicated with the outside on the side, facing the sealing gasket, of the valve element, the valve element can rotate among a plurality of rotating positions, one flow channel can be com