Objective To introduce anatomic landmark for location and protection of superior laryngeal nerve and recurrent laryngeal nerve in thyroid surgery.

Conclusions: Identification of anatomic landmark and preservation the technological key points are important to perform laparoscopic antireflux surgery.

Conclusions: the method that using the central point of C2 inferior articular process as a key anatomic landmark for determining the enter point of C1 pedicle screws is accurate and reliable.