Nail cancer means thyroid cancer. Lymphatic fistula 35 days after thyroid cancer surgery and neck swelling can be treated by medication, physical therapy or through surgery. 1. Drug treatment: most patients will have neck swelling after thyroid cancer surgery, patients can use antibiotics such as amoxicillin, penicillin and other antibiotics under doctor’s instruction to prevent infection. Usually, after eliminating the infection in the operation area, the necrotic tissue and corresponding secretion will be gradually absorbed, the lymphatic fistula will gradually heal and the swelling will disappear. 2. Physical therapy: local topical application or other physical therapy can be used to improve local blood circulation, promote the absorption of exudate and reduce the inflammatory response. 3. Surgery: if the neck is swollen for a long time after thyroid cancer surgery and does not get better after corresponding treatment, it is recommended to go to the hospital for examination, and surgery may be needed. Other conditions can also lead to lymphatic fistula after thyroid cancer surgery 35 days neck swelling, it is recommended that patients seek medical attention in a timely manner, under the guidance of doctors to carry out the corresponding treatment, not to use their own drugs to deal with.