With the increasing prevalence of thyroid cancer, the discovery of thyroid nodules has caused a lot of panic and anxiety. In fact, thyroid nodules are very common. About 80-90% of thyroid nodules are nodular goiter, which is a non-tumor lesion caused by proliferation and degenerative changes of thyroid tissue, and only about 5-10% are thyroid cancer. Therefore, it is important not to worry too much when thyroid nodules are found, but to listen to the doctor’s advice in time. Thyroid nodules ↓ History, physical examination, laboratory tests, ultrasound, nuclear scan, FNA, etc. L ↓ K Benign Uncertain Malignant ↓ ↓ ↓ Observation/medication/iodine therapy Repeated puncture under ultrasound Surgery