Four-way valve and vehicle

The utility model provides a four-way valve and a vehicle, the four-way valve comprises a valve seat, a valve core and a first sealing piece, the valve seat is provided with a valve cavity and a valve port communicated with the valve cavity; the valve core is accommodated in the valve cavity; the first sealing piece is arranged on the peripheral face of the valve element in a sleeving mode and used for sealing the joint of the valve element and the valve seat, and a first part of the first sealing piece is attached to the inner wall face of the valve element and the inner wall face of the valve cavity. The second part of the first sealing piece extends in the axial direction of the valve element and is used for being attached to the inner wall face between the valve element and the two adjacent valve ports; the first part of the first sealing piece is attached between the valve element and the inner wall face of the valve cavity to seal a gap between the valve element and the inner wall face of the valve cavity, the second part of the first sealing piece can seal the inner wall face between the valve element and the two adjacent valve ports when the valve element rotates, and the sealing performance between the valve element and the inner wall face of the valve cavity is improved.