To provide a leg cover for a seat slide capable of surely improving in safety and appearance.

In this leg cover for a seat slide, comprising a leg bracket 60 rising approximately in the L-shape, mounted on the longitudinal ends of a lower rail 56 for guiding the movement of an upper rail longitudinally moving with a seat, and supporting the lower rail 56 to a floor at a car body side, and mounted on the leg bracket 60, a leg cover 11 mounted on the elg bracket 60 supporting a rear end side of the lower rail 56, of the leg cover buries the approximately L-shaped rising outside of the leg bracket 60, and covers a rear end surface of the lower rail 56, and an upper surface side is formed into an approximately continuous curved surface 12 from an upper surface 56a of the lower rail 56 to the floor at the car body side.