Objective:To discuss the new clinical characteristics of thyroid cancer. Methods:Data were reviewed retrospectively from 572 thyroid cancer medical records of Head and Neck Surgery Department in Shanghai Cancer Hospital in 2006. Results:There were 531 cases (92.8％) of papillary thyroid carcinoma,301 cases had level VI lymph node metastasis（52.6％）,117 cases had side neck metastasis（20.5％）,8 cases had distant metastasis.The veracity of the Ultrasound in thyroid cancer was 88.2%.There were 204 cases （35.7％）of thyroid microcarcinoma,167 cases of them were found by Ultrasound. Conclusion:The metastatu rate of cervical lymph node metastasis has the positive relationship with the size of the primary tumor.The case of thyroid microcarcinoma is increasing.It may be the most important reason of thyroid cancer's increasing incidence.