VEHICLE SEAT STRUCTURE

A vehicle seat structure includes: a first side frame () extending in a front-rear direction along one side portion of a seat cushion (); a second side frame () extending in the front-rear direction along the other side portion of the seat cushion (); posture changing mechanisms () mounted on the first side frame () and capable of changing the posture of the seat cushion (), and reinforcement members (R, R) provided at a portion of the second side frame () where the reinforcement members (R, R) overlap the posture changing mechanisms () in a side view.