Restrained glide rail

The invention relates to a rail capable of decelerating; a traditional glide rail is difficult to decelerate; and the rail capable of decelerating is simple in structure, is convenient to decelerate, and hardly influences the glide needing no deceleration. A restrained glide rail comprises a glide plate (2) and side plates (1), and is characterized in that the inner sides of the two side plates (1) are fixedly connected with multiple deceleration piles (3), wherein the deceleration piles (3) are covered by covering pieces (4); one ends of the covering pieces (4) are connected with the side plates (1); the connected ends are positioned at the upstream of the glide direction; and the other ends cross over the deceleration piles (3) and extend to the downstream direction until the connected ends between the adjacent covering pieces (4) at the downstream and the side plates (1) are covered. The restrained glide rail can decelerate at the time of needing the deceleration, and has the advantage of simple structure.