Thyroid nodule category III is a diagnostic method of ultrasound and is an adjunctive diagnostic method for assessing the benign or malignant nature of thyroid nodules. Thyroid nodule category III suggests that the nodule is usually benign, malignant rate <2%. Thyroid nodule diameter is small and no clinical symptoms generally do not need surgery; thyroid nodules within a short period of time to increase, consider malignant or the emergence of compression symptoms require surgical treatment. 1. Do not need surgery: people with small diameter thyroid nodules and no other clinical symptoms can undergo regular ultrasound examinations, and if there is no change in their condition, they can continue to be followed up without the need for surgical treatment. 2. Surgery is needed: if the thyroid nodule grows faster, malignancy is considered, or compression symptoms appear, such as hoarseness, difficulty in swallowing and other clinical symptoms, it is necessary to go to the hospital for further examination, and surgery can be considered if necessary. If the patient has no obvious symptoms, it is recommended to review regularly. If dysphagia and other compression symptoms occur, it is recommended to go to the hospital for examination in time.