The guide wire is made of super elastic and hard nickel-titanium alloy material, so that the guide wire has good torsion control, support and flexibility Super-slip hydrophilic coating treatment, the sliding resistance on the surface of the guide wire is small, avoiding tissue damage, a variety of thickness and length specifications are available, covered with a hydrophilic coating film, the surface is smooth, and it is easy to pass in the cavity The two ends of the guide wire have different hardness, the hard segment is hardened, and the soft segment is soft enough to be developed under X-ray and can be clearly positioned