Abstract: Abstract Objective Talk about the selection of surgical operation for clincle stage N0(cN0) papillary thyroid carcinoma (PTC), in order to ensure the quality of life patients . Methords 127 cases of PTC with cN0, 71cases with thyroid lobectomy and isthmus lobectomy, 56 cases with the glands resection.113 cases underwent selective lymphadenectomy,44 cases with central lymph node dissection 13 cases with expansion of the Central lymph node dissection, 56 cases with functional neck lymph node dissection. Compared the differences between the various sets of data with chi-square test .Results In 113 cases，36.3%（41/113）of all cases showed implicit lymph nodes metastasis. One case got injury of laryngeal recurrence nerve on account of the tumor invasion. No one got seizures occur with permanent hypocalcemia. Statistics analysis shows that : Ⅱ ~ Ⅳ lymph node metastasis rate was difference between Ⅵ lymph node negative and the positive groups. The difference was significant (P <0.05).The extent of tumor invasion(within cancer capsule, the invasion of the capsule, the invasion of the gland) and the age group （＜45years，≥45years）with Ⅵ lymph node metastasis（P＜0.05）was statistically significant. Body mass index(BMI) and gender with Ⅵ lymph node metastasis（P＜0.05）was not statistically significant. Conlusion The larger extent of tumor invasion and the young age may likely to get lymph nodes metastasis. Patients with cN0 PTC shoude performed central lymph node dissection, further more , to the high-risk patients, we should consider expansion of the central lymph node dissection.

Key words: 生活质量