It requires the patient to lie or sit in a fixed position, disinfect the area, and then the ultrasonographer will position the area with the ultrasound and perform the puncture with a needle under surveillance, but this requires the cooperation of an experienced surgeon and the patient for successful puncture. If the patient moves during the procedure, the puncture site may be misaligned, causing bleeding or failure of the puncture. The patient also needs to hold his breath during the puncture to reduce local movement. After the puncture, local pressure should be applied for a period of time, and if there is significant local pain or swelling, a doctor should be consulted promptly to prevent compression of the trachea.