The utility model relates to a horse racing runway rail convenient to dismouting. This horse racing runway rail convenient to dismouting, stand including the vertical settings of a plurality of root all is equipped with a lagging between the top of two adjacent stands, the upper portion of stand is to the crooked arc portion of horse racing runway orientation, is equipped with a connecting piece at the tip of arc portion, and the both ends of lagging are passed through respectively the connecting piece links firmly with the top of arc portion. This horse racing runway rail convenient to dismouting, it is swift to peg graft, easy dismounting, the construction is fast, can have enough to meet the need, has improved the flexibility of construction. Arc portion on the stand can guarantee only can bump against the lagging when horses collide on the rail, has improved the protective properties of rail to horses, the top of lagging hangs on the connecting plate through the mounting groove, and the bottom is fixed on the rake of connecting plate through expansion bolts, and the rake has changed traditional vertical connected mode, receives the partly holding power to perpendicular to rake surface of resolution of force with the lagging.