The survival rate of 30 years after nail cancer is mainly related to cancer type, stage, treatment and individual factors of patients, which should be analyzed on a case-by-case basis. Thyroid cancer is mainly divided into papillary, follicular, undifferentiated and medullary carcinomas. Among them, papillary carcinoma and follicular carcinoma are less malignant and have the longest survival time. If patients are detected early and treated actively, they usually have a good prognosis and can survive for 30 years or more. If medullary carcinoma or undifferentiated carcinoma is detected early and treated aggressively, it usually has a better prognosis and can survive for 30 years or more. Therefore, patients with thyroid cancer who have indications for surgery should be actively treated with surgery and postoperative radiation therapy, which can greatly improve patients’ 30-year survival rate. Patients with thyroid cancer are recommended to have regular review of ultrasound or CT of the neck to determine whether there is any enlargement of lymph nodes in combination. Thyroid function should be reviewed every 3-6 months to adjust the dosage of thyroid hormone.