Director of thyroid surgery of Sun Yat-Sen Memorial Hospital in Sun Yat-Sen University, Standing member of thyroid disease professional committee of Chinese Research Hospital Association, Member of thyroid surgery group of surgeon branch of Chinese Medical Doctor Association, Member of thyroid cancer professional committee of Chinese Anticancer Association, Member of thyroid disease prevention and control branch of China Association for Promoting International Exchange of Medical Care, Chairman of thyroid professional committee of Guangdong Medical Education Association, Vice chairman of thyroid cancer professional committee of Guangdong Anticancer Association, Vice chairman of thyroid professional branch of Guangdong Medical Doctor Association and head of nerve monitoring professional group, Vice chairman of thyroid professional committee of Guangdong Clinical Medical Association, Vice chairman of thyroid professional committee of Guangdong Pharmaceutical Association, Vice chairman of thyroid and parathyroid group of surgical branch of Guangdong Medical Association.