The utility model discloses a subway turnout area plate-type ballastless track composite structure. The subway turnout area plate-type ballastless track composite structure comprises a reinforced concrete turnout slab, a self-leveling concrete layer, a geotextile separation layer and a base sequentially from top to bottom, wherein the base is provided with at least two convex barricades which are embedded into the self-leveling concrete layer, and rubber plates are glued on the periphery of each convex barricade and are used to provide a space for release of stress in vertical and horizontal directions and limit displacement. The bottom of the reinforced concrete turnout slab is provided with shearing-resistance steel, and the reinforced concrete turnout slab forms the composite structure through self-leveling concrete and the self-leveling concrete layer. The subway turnout area plate-type ballastless track composite structure has the advantages of being high in laying accuracy, small in difficulty, easy to operate, and convenient to repair. The reinforced concrete turnout slab and the self-leveling concrete layer form the composite structure so that the strength is higher. The installation of the geotextile separation layer enables vibration noise to be weakened, and secondary pouring repair is convenient when differential settlement occurs on the foundation.