Microwave ablation is a common clinical method for the treatment of thyroid nodules, and the common side effects are as follows: 1. hoarseness, which is due to the microwave ablation needle in the ablation process, the needle tip temperature is too high to damage the laryngeal nerve, causing paralysis of the vocal cords on one side of the patient, resulting in the performance of hoarseness. 2. hypocalcemic twitching, which is mostly seen in thyroid nodules and parathyroid glands are close to each other, and the process of performing thyroid In the process of microwave treatment of thyroid nodules, the blood supply to the parathyroid glands or the glands themselves are damaged, which can lead to a significant decrease in the patient’s blood calcium index, resulting in twitching and numbness of the extremities. 3. Long-term non-healing of the needle tracts, mostly seen in patients with large size of thyroid nodules or with diabetes mellitus, may cause long-term non-healing of the needle tracts due to the longer time of microwave ablation, greater local damage and the patient’s own healing ability. Long-term non-healing.