To provide a sheet for a vehicle capable of easily and certainly preventing a seat from getting dirty when a pet or dirty baggage is placed on the seat.

The back surface side of a seat body 1 comprising a seat cushion 1a and a seat back 1b is provided with a retractor 3 for winding and storing a sheet member 2 for protection that is extracted through a mating surface between the seat cushion 1a and the seat back 1b and covers the surface of the seat body 1. The retractor 3 preferably comprises a first retractor 3a for winding and storing a sheet member 2a for protection for covering the surface of the seat cushion 1a and a second retractor 3b for winding and storing a sheet member 2b for protection for covering the surface of the seat back 1b.