The invention discloses an auxiliary supporting guide wire special for ureter twisting. The auxiliary supporting guide wire comprises a guide wire outer sheath and a guide wire inner core, wherein thefar end of the guide wire outer sheath is designed to a blunt-ended closed shape, the near end of the guide wire outer sheath is open, the guide wire inner core is arranged at the internal hollow position of the guide wire outer sheath, the far end of the guide wire inner core is fixed to the guide wire outer sheath, and the near end of the guide wire inner core extends out of the guide wire outer sheath. The guide wire outer sheath is composed of a guiding section close to the far end and a vertical section close to the near end, wherein the guiding section of the guide wire outer sheath isformed by a soft stretchable wall and a soft non-stretchable wall through enclosure, and the guiding section is wholly bent towards the side of the non-stretchable wall when the guide wire inner coreis pushed. For a person skilled in surgical operation or surgical operation beginner, a ureteroscope can be helped to smoothly through the bent part of a ureter, especially the narrow twisted part, and normal and safe operation execution is ensured. In addition, the auxiliary supporting guide wire is simple in operation, low in manufacturing cost and worthy of large-scale popularization.