Normally, malignant tumor of thyroid gland has a relatively small impact on human body, especially early stage malignant tumor of thyroid gland does not cause much harm. However, if lymph node metastasis occurs, which is a more serious situation, patients should undergo surgery in time according to the severity of lymph node metastasis. After surgery, detailed pathological examination of the metastatic lymph nodes should be performed. Based on the results of the pathological examination, the patient should undergo further endocrine therapy or iodine-131 treatment. The prognosis for malignant tumors of the thyroid gland is relatively good. In case of lymph node metastasis, the patient’s prognosis is still very good as long as standard treatment, surgery and necessary adjuvant therapy after surgery are performed. Therefore, patients are advised to face this situation positively without special tension.