Branchial cleft cysts are prone to recurrence and secondary infections, and hence, surgical resection is necessary. These masses are traditionally removed through an overlying incision; however, the resulting scar can be considered aesthetically displeasing. We accomplished a case of endoscopic resection of branchial cleft cyst in the right side of the neck of an 18-year-old female patient. Incisions were made in the bilateral mammary areolae and right axilla of the patient. We completely resected the mass using an ultrasonic scalpel and electrocoagulation hook within 45 minutes. All of the procedures were finished on the deep face of platysma muscle, which was not severed. There was no significant bleeding during the operation and the postoperative recovery was smooth, without recurrence for 6 months. The endoscopic resection of the neck mass through bilateral areolae and axillary incisions is simple, safe, and feasible, because there were covert incisions and fewer complications.