SEAT SLIDING DEVICE

The invention discloses a seat sliding device. The seat sliding device is provided with a pull rod and a pair of sliding bodies, and the pair of sliding bodies is provided with a fixed guide rail laid on a floor; a movable guide rail which is guided by the fixed guide rail and slides; a bracket which is provided on the movable guide rail and which is capable of swinging such that the front and rear parts of the bracket are opposite to each other in the vertical direction, with the intermediate part of the long side as a fulcrum; a bracket supported so as to be able to rotate from a predetermined posture to only one direction around an axis extending left and right by means of a hinge part of the bracket; and a movement restricting portion that restricts the sliding of the movable guide rail in a state in which the rear portion of the bracket is raised, and that releases the restriction of the sliding of the movable guide rail in a state in which the rear portion of the bracket is lowered, the lever being fixe