Seat mounting mechanism of vehicle and vehicle

The invention discloses a seat mounting structure of a vehicle and the vehicle. The seat mounting structure of the vehicle comprises a fixed rail, a movable rail and a driving assembly. The lead screw is fixed to the movable rail and moves along with the movable rail, in the process that the seat slides in the preset direction, the lead screw cannot be exposed and is more attractive, dust is not prone to falling into the lead screw, the motor-gear assembly is fixed to the vehicle bottom plate, and the motor-gear assembly and the vehicle bottom plate are kept still; in this way, avoiding design does not need to be conducted on the vehicle bottom plate near the seat, the arrangement flexibility and the space utilization rate of the space below the seat are improved, more design space is provided for a seat system, the arrangement flexibility and diversity of the space of the bottom of the seat and the vehicle bottom plate are improved, and in addition, the risk that a motor is disengaged in the seat adjusting p