Abstract: The utility model relates to a plastic steel composite pipe, which is composed of a PVC pipe, a polyethylene pipe and steel wires The outer circumferential surface of the polyethylene pipe is carved with 8 slots and each slot is placed with one steel wire Then the PVC pipe is sheathed on the polyethylene pipe to be into integration The steel wires play the reinforcement function in a cement prefabricated component in order to improve the strength of the plastic pipe The product is mainly used for support brackets of greenhouses The utility model has the advantages of no corrosion, high strength, good elasticity, low cost, etc