Thyroid nodule puncture is a common method used clinically to clarify the nature of thyroid nodules, and the specific steps are as follows: i. The specific site of the thyroid nodule is clarified by ultrasonography. After determining the puncture site, 1% lidocaine injection is used for local infiltration anesthesia at the puncture site. After the local anesthesia is satisfied, the specific site of the thyroid nodule is revealed by the ultrasound probe, and the puncture needle is slowly inserted through the skin incision with the right hand, gradually passing through the subcutaneous tissue and the broad neck muscle to enter the thyroid gland and reach the inside of the nodule. If the smear specimen of the thyroid nodule is unsatisfactory, multiple punctures should be performed as many times as possible to avoid not being able to clarify the exact nature of the nodule.