Objectives: Surgery remains the main treatment for locally advanced thyroid cancer invading the upper airway. We attempted to preserve the laryngeal skeleton by performing vertical hemilarygopharyngectomy (VHLP) in patients requiring total laryngectomy and sternocleidomastoid(SCM) muscle flap for reconstruction defect in thyroid cancer involving the trachea cases. Methods:From January, 2005 to December, 2016, thyroid cancer patients hospitalized in Seoul St. Mary Hospital involved in this study. We have applied VHLP in locally advanced thyroid cancer with laryngeal invasion in three cases which are needs to take a total laryngectomy, and describe eight cases of thyroid cancer involving the trachea reconstructed with SCM muscle flap. We evaluate oncological and functional results from medical record retrospectively. Result:Three patients had advanced thyroid cancer with laryngeal skeleton invasion and eight patients had trachea invasion . The first case was laryngeal invasion by spindle cell carcinoma of thyroid with paraglottic space invasion, the second casebys papillary carcinoma with paraglottic space invasion, and the third case by anaplastic carcinoma with pyriform sinus invasion. In the case of anaplastic carcinoma, the cancer was recurred locally and the patient died 6 months after surgery and other two cases were NED(no evidence of disease) state with 5 – 10 years follow-up. The five of the SCM muscle flap cases were recurred tumor with tracheal wall invasion after total thyroidectomy. Other three cases were the primary cases. One patient recurred and operation again using the opposite site of SCM muscle flap. All patients were NED state now. Conclusion:VHLP is one of the good surgical procedure to preserve the laryngeal function in the surgical treatment of locally advanced head and neck cancer especially deeply invading into the larynx. The SCM muscle flap method is a good substitute to solve this problem especially mid size tracheal invasion cases.