The utility model belongs to a single-column type cable bent tower traction system which comprises a supporting device, a lifting device and a locking device, the supporting device is located at the top of a cable bent tower and used for supporting the lifting device, two ends of a longitudinal extension rod are located outside end faces of two sides of the top of the cable bent tower, and an anchor bearing plate is fixedly arranged at the bottom of each column and fixedly arranged at the top of the cable bent tower through expansion bolts. The lifting device is located on the supporting device and used for lifting the pipe body. The lifting device is composed of a pulley, a steel wire rope, a hook and an electric wire twisting disc. The locking device is used for locking a lifted pipe body and is composed of a lifting buckle, a clamping disc and a fixing bolt. The stay cable PE pipe hoisting device can mechanically finish hoisting of stay cable PE pipes and has the advantages of beingsimple in structure, high in construction speed, time-saving, labor-saving, high in construction efficiency, convenient to disassemble and assemble and good in using effect.