Eagle's syndrome is a rare condition characterized by an abnormally elongated styloid process. The elongated styloid process can be palpated intraorally, and the diagnosis can be confirmed by imaging, CT being the most accurate. Its clinical symptoms usually are cervicofacial pain and limited lateral neck movement. Treatment choices for Eagle's syndrome include both conservative therapy and surgery. Major risks of surgery include massive bleeding, carotid thrombosis and subcutaneous cervical emphysema. Therefore, surgery is indicated only in case conservative therapy fails. In this article, we present a rare case of a 67-year-old female with an abnormally elongated right styloid process treated by hemi-mandibulotomy and its six-month follow-up course.