The invention relates to a draw texturing system of a DTY high stretch yarn for knitted socks, and relates to the technical field of textile production. The draw texturing system comprises a base frame, and further comprises yarn inlet mechanisms, a first roller, a first hot box, a false twister, a second roller, a network nozzle, a second hot box, a third roller, an oiling mechanism and a windingmechanism, wherein the yarn inlet mechanisms, the first roller, the first hot box, the false twister, the second roller, the network nozzle, the second hot box, the third roller, the oiling mechanismand the winding mechanism are sequentially arranged on the base frame in the stretch yarn moving direction. The oiling mechanism comprises an oil box fixedly arranged on the base frame and an oil cover rotationally arranged on the base frame, the oil cover is located on the upper side of the oil box, the oil box is filled with an oiling agent, the oil cover is rotationally provided with an oilingwheel, and the lower end of the outer ring surface of the oiling wheel stretches into the oiling agent. The oil cover is provided with an oil control assembly used for squeezing the end face of the high stretch yarn to control the oiling quantity of the high stretch yarn, and the oil control assembly is located on the side, away from the third roller, of the oiling wheel. The draw texturing system has the advantages that the oil containing rate of the DTY high stretch yarn is controlled, so that the quality of the DTY high stretch yarn is improved.