Thyroid nodules that have become small but elevated in grade need to be clarified, and once they are diagnosed as malignant, they need to be treated with surgery in a timely manner. If the nodules are benign and there is no physical discomfort, it is better to observe them for the time being. Thyroid nodules are masses of thyroid tissue that appear after the abnormal proliferation of thyroid cells. If the size of the nodule becomes smaller but its grade is elevated, it is recommended that the patient undergo a fine-needle aspiration cytologic biopsy. Once a malignant nodule is diagnosed, the patient needs to choose surgical treatment, such as thyroid lobectomy and total thyroidectomy, taking into account his or her condition. If the nature of the nodule is benign and the patient does not have other uncomfortable symptoms, the patient can be temporarily observed and no special treatment is required. However, if the nodule presses on the surrounding tissues, causing the patient to experience breathing difficulties, pain, shortness of breath and other symptoms, timely surgical treatment, such as microwave ablation, is also needed. It is recommended that patients with small but elevated thyroid nodules should go to a regular hospital to find out the cause of the disease and actively cooperate with the doctor to take treatment measures.