Cage door limiting structure

The utility model relates to a cage door limiting structure which is characterized by comprising coop stand columns, an upper cage door and a lower cage door which are rotationally installed between the two coop stand columns, and limiting frame bodies assembled at preset positions of the coop stand columns. The coop stand column is provided with a stand column groove. The limiting frame body is provided with a frame groove, a first side blocking lug and a second side blocking lug, wherein the first side blocking lug and the second side blocking lug horizontally extend along the two sides of the frame groove. The limiting frame body is assembled on a coop stand column, a frame groove of the limiting frame body is embedded in a stand column groove and fixedly connected with the stand column groove, and a first side blocking lug and a second side blocking lug of the limiting frame body extend towards the two sides respectively and cover the edges of an upper coop door and a lower coop door on the two sides at t