Abstract:Objective To explore the value of cervical collar in the treatment of postoperative lymphatic leakage in the patients with thyroid carcinoma. Methods A retrospective analysis was performed on the data of 13 patients with lymphatic leakage after radical thyroidectomy (including unilateral glandular lobe, isthmus and ipsilateral central lymph node dissection) from July 2009 to May 2020. There were five patients treated with neck support compression bandaging, cotton ball packing, continuous negative pressure suction and low-fat diet in neck support group from March 2019 to May 2020, and eight patients treated with elastic bandage compression dressing, continuous negative pressure suction, fasting and water deprivation and parenteral nutrition in control group from July 2009 to February 2019. The treatment days, the time taken for drainage volume less than 10 ml/d, the time of dressing change and the cost of treating lymphatic leakage were compared between two groups. Results Compared with control group, the treatment days[（13.8±0.7）d vs （16.0±0.9）d， t =5.887， P <0.01], the time taken for drainage volume <10 ml/d[（10.9±1.0）d vs （13.6±1.2）d， t =5.294， P <0.01], the time of dressing change[（19.1±2.6）min vs （26.0±3.5）min， t =4.640， P <0.01] and the cost of treating lymphatic leakage[（2 937.5±978.2）yuan vs (10 745.5±3 115.0）yuan， t =6.803， P <0.01] 〖JP3〗significantly decreased in neck support group. Conclusion It is a feasible, simple and effective method that cervical collar compression bandaging, cotton ball packing, continuous negative pressure suction and low-fat diet are applied to treat the postoperative lymphatic leakage in patients after thyroid cancer surpgery.