The symptoms of thyroid cancer mainly include a lump in front of the trachea, in the middle of the root of the neck or slightly to one side, which is hard, cannot move up and down with swallowing, is fixed and cannot be pushed, and gradually increases in size; enlarged lymph nodes can be seen in the neck, pressing the trachea, making breathing difficult and making the voice hoarse. The lymph nodes in the neck are enlarged, pressing on the trachea and causing dyspnea and hoarseness. In the early stage of the disease, there are no obvious conscious symptoms, but a hard and uneven nodule in the thyroid tissue. Local metastases are often found in the neck, with hard, fixed lymph nodes. Distant metastases are usually found in the dry bones and lungs. In the early stage of thyroid cancer, there is no obvious symptom, but a hard and uneven lump in the thyroid tissue, which gradually increases in size and decreases in upward and downward movement when swallowing. If these two symptoms grow rapidly within a short period of time, it is mostly undifferentiated cancer. In advanced stage, it often compresses the laryngeal antalveolar nerve, tracheoesophagus and produces hoarseness and dysphagia. If compression of cervical sympathetic nerve can produce Horner’s syndrome or cervical invasion from superficial branch nerves, patients can have pain in ear, occipital and shoulder, etc. Local metastasis is often in the neck with hard and fixed lymph nodes, and distant metastasis is mostly seen in flat bone and lung. On ultrasound, most of the thyroid gland can be seen as a “calcified shadow” and ECT usually shows a “cold nodule”. Therefore, when ultrasound reveals a calcified mass in the thyroid gland and ECT also shows a “cold nodule”, surgery is indicated. Radical surgery is the only correct way to treat thyroid cancer, which is a malignant tumor of the thyroid epithelium. The scope of surgery includes: thyroid tumor removal + total thyroid removal + lymph node dissection in the neck area. Generally speaking, most of the thyroid cancers have a very good prognosis after surgery, with a survival rate of about 80% in 10 years after surgery, and the technology of thyroid surgery is very mature nowadays, and complications after surgery are very rare.