At present, with the opening of the second child, some post-ligation patients have the demand for vasectomy recanalization, and the recanalization methods include the following: 1, naked eye anastomosis: in the early days, the microscope was not applied to the operation, and the ligated section was mostly cut off by the naked eye and then the severed end was anastomosed to restore its continuity and achieve vasectomy recanalization; 2, microscopic anastomosis: because the vas deferens is thin and the inner diameter is less than 1mm, the difficulty of the operation is significantly reduced by magnifying the severed end anastomosis under the microscope, and the recanalization rate is higher, with fewer postoperative complications and faster recovery of the patient.