Nail cancer generally refers to thyroid cancer, which may cause heart disease after patients’ surgery. For some post-surgery thyroid cancer patients, the heart function may be affected by thyroid hormone abnormality, such as elevated thyroid hormone induced hyperthyroidism, which may strengthen the contractility of heart muscle, thus increasing the risk of heart disease. At the same time, if there is insufficient secretion of thyroid hormone in postoperative thyroid cancer patients, it is easy to lead to a slow heart rate, increasing the risk of ischemic heart disease. In addition to heart disease, some post-surgery thyroid cancer patients may also suffer from other complications such as recurrent laryngeal nerve injury, hypoparathyroidism, bleeding, etc., which may affect the recovery of the body and lower the quality of life. After surgery, patients should ensure a reasonable diet, maintain physical and mental happiness, and strengthen the care of surgical wounds to prevent infection. It is recommended that post-surgery thyroid cancer patients should have regular rechecks of thyroid function and neck ultrasound, etc., in order to monitor whether the tumor recurs, metastasizes or induces heart disease. If the postoperative period is accompanied by uncomfortable symptoms, they should seek medical treatment in time.