Seat mounting mechanism of vehicle and vehicle

The utility model discloses a seat installation mechanism of a vehicle and the vehicle. The seat installation mechanism 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, the motor-gear assembly and the vehicle bottom plate are kept immovable, and the motor-gear assembly is fixed to the vehicle bottom plate. 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