Microcarcinoma of thyroid nodule has a low risk of spreading, about 90% of microcarcinoma of thyroid will not grow, and about 96% of patients do not have lymph node metastasis. The diameter of microcarcinoma of thyroid is less than 1cm, so it is called “microcarcinoma”, and the pathological type of most microcarcinoma of thyroid is papillary carcinoma. The prognosis of microcarcinoma of thyroid is better, and the data show that about 10% of microcarcinomas will grow by about 3mm within ten years, and about 4% of the patients will have lymph node metastasis. The treatment for microscopic thyroid cancer is mainly surgery. Most patients find the nodules during physical examination, and there is still a partial risk of metastasis if left untreated, and they need to be treated with thyroxine tablets routinely after surgery. The treatment of microscopic thyroid cancer is mature and has a good prognosis, so it is important to seek medical treatment in time to receive treatment.