A vehicle seat includes a link mechanism for liftably connecting a seat cushion to a support base directly or indirectly mounted to a vehicle body. The seat cushion is composed of a seating frame with side frames arranged at both right and left ends. The link mechanism includes link members connecting the support base and side frames, and a link connecting member connecting the link members together. Flange portions are formed at both end portions of the extending direction of the link connecting member. End surfaces of the extending direction of the flange portions and facing surfaces of the link members facing the end surfaces are abutted, and the end surfaces and the facing surfaces are joined by welding.