Contraindications to saphenous vein surgery include severe cardiopulmonary coexisting disorders, coagulation disorders, unstable vital signs, deep vein occlusion, etc. Physician’s advice should be followed as follows: 1. patients with severe cardiopulmonary coexisting disorders with high risk of general anesthesia, local or regional anesthesia can be used for the procedure. 2. severe bleeding and coagulation disorders. 3. unstable vital signs, such as concomitant systemic infections, which may cause embolism or infection after surgery. 4. Poor glycemic control in diabetes, moderate to severe peripheral arterial disease, extensive skin changes or ulcers, which may increase the risk of non-healing wounds. 5 Deep vein occlusion, thrombosis, etc., are contraindications. Different patients have different case characteristics, need to strictly do a good job of preoperative assessment, the specific surgery whether there are contraindications should also be their supervising physician for comprehensive analysis and judgment.