The invention provides an operation platform for a subway track flat car. The operation platform for the subway track flat car comprises a through platform and a platform support, wherein the platformsupport is arranged at the lower portion of the through platform and fixedly supports the through platform on the upper plane of the platform of the track flat car, the platform support is a door-shaped structure formed by connecting vertical columns arranged on two sides and upper support beams arranged on the top, and the distance between the two side vertical columns is matched with the platform width of the track flat car, so that a goods carrying platform on the track flat car is avoided, the purposes of not interfering with the goods carrying of the track flat car and meeting the purpose of transporting the goods are achieved, and the platform also has the functions of overhauling and maintaining working high above the ground such as tunnels, contact networks and the like.