The utility model discloses a greenhouse concrete foundation special casting box which is quadrilateral. The greenhouse concrete foundation special casting box comprises four steel side plates, hinges, locating pin shafts and reinforcing ribs, the four steel side plates are used for defining a quadrilateral frame, the hinges and the locating pin shafts are used for connecting adjacent side plates, and the reinforcing ribs are arranged on the four side plates. The inner side faces of the side plates are smooth planes, every two side plates are regarded as one set and connected through corresponding hinges, and the adjacent side plates are connected through the locating pin shafts which penetrate through connecting and locating pin holes. Due to the fact that the greenhouse concrete foundation special casting box is made of steel, the casting box has the advantages of being high in strength, flat in surface, convenient to carry, assemble and disassembly, capable of being repeatedly used and the like.