To simply and smoothly execute fixing operation of a baggage, to effectively correspond to the size of baggage and to improve its appearance and touch at the time of not using a baggage fixing net by constraining holding baggage mounted on a vehicle seat by the baggage fixing net.

The baggage fixing net 30 is housed inside of an arm rest, 20 which is housed the recessed place 13 of a seat back 12 and used by pulling out, in the state capable of freely pulling out. The net 30 is fixed to a retractor 40 spring-energized in a winding direction. A lid 50 fitting to a net taking out port 21 on the upper surface of the armrest 20 is fixed to the pulling-out tip of the net 30. A part of the product surface of the arm rest 20 is constituted of the lid 50. Baggage W is constrained held by engaging the lid 50 to the engaging member of a door 60.