Among the three elements of incision design for cervical lymph node dissection, safe and effective excision of the lesion remains a prerequisite, and only on this basis can we consider the cosmetic effect of the postoperative incision. Only by fully grasping the characteristics of the blood supply to the neck flap can we design a safe and effective incision that meets the cosmetic requirements. The blood supply of the skin of the neck is located on the superficial surface of the broad cervical muscle and is in a random network structure, which can be divided into the following four areas: 1. upper anterior cervical area Supplied by the branches of the facial artery and the inferior chin artery, which emanate from below the lower edge of the mandible into the broad cervical muscle 2. upper lateral cervical area Supplied by the occipital artery, the posterior auricular artery and the broad cervical muscle skin branches of the external carotid artery 3.Middle anterior cervical area is supplied by the cortical branch of the superior thyroid artery to the broad cervical muscle, with an occurrence rate of about 88%. It penetrates the deep cervical fascia at the intersection of the scapulo-hyoid and sternocleidomastoid muscles. The lower cervical region is supplied by the branches of the cervical broad muscle branch and the through branch of the transverse cervical artery, and its blood supply is better than that of the terminal branch of the cervical broad muscle skin branch of the superior thyroid artery in this region, with an occurrence rate of about 100%. The external jugular and subchin veins are the main reflux veins. And the vascular network in the subcutaneous skin is mostly transverse in its course. From the above distribution of blood supply, it can be concluded that the central horizontal dermal incision in the neck meets the requirement of blood supply, and the transverse incision in the middle of the neck can completely avoid the above mentioned vessels. In addition to the blood supply, the location of the cervical skin lines is also very important for the safe design of cervical lymph node dissection. From the analysis of the distribution location of the dermatoglyphs, most of the dermatoglyphs in middle-aged and elderly patients are distributed in the supra-ring area, and since laryngeal cancer often occurs in this age group, how to fully expose the IV area is a difficult design point when designing the dermatoglyphic incision for total cervical lymph node dissection. Similarly, for thyroid carcinoma, which is common in young and middle-aged women, it is difficult to design how to adequately expose zone IIB because most of the dermatoglyphs are distributed in the cricoclavicular region. To solve these two challenges, either a horizontal posteriorly extended incision can be adopted or an adjuvant incision can be adopted to more fully expose the above areas. The design of the auxiliary incision should also meet the cosmetic requirements, and it is suitable for those who have poor exposure of the simple dermatome incision. For aesthetic reasons, the main design is on the lateral side of the neck, and the auxiliary incision is made at the posterior edge of the sternocleidomastoid muscle or the posterior edge of the caudal lobe of the parotid gland, so that the scar can be concealed when viewed from the front due to the occlusion of the sternocleidomastoid muscle.