An 18-year-old girl with thyroid nodules can be treated with general therapy, oral medication or surgery. 1. General treatment: Girls who have been diagnosed with thyroid nodules should eat a light diet, strengthen nutrition, have a regular work and rest schedule, and keep their emotions stable. Those who have no obvious symptoms should have regular checkups to observe changes in the size of the nodules. 2. Oral medication: Taking thyroxine tablets can inhibit the secretion of thyroid-stimulating hormone and reduce the hyperplasia of the thyroid gland, thus reducing the size of the nodules and slowing down the growth of the nodules. 3. Surgery: For large size, dysphagia, dyspnea and other pressure symptoms or malignant tendency of the thyroid nodules should be timely surgical resection treatment. 18-year-old girls with thyroid nodules should go to the hospital in time to enter the clinic, under the guidance of the doctor to carry out regular treatment.