People often talk about cancer, but in fact, laryngeal cancer is a type of malignant tumor with good treatment effect, and the key to treatment is early detection. Clinically, laryngeal cancer is divided into three zones according to different parts of the primary lesion, including supraglottis, glottis and infraglottis, and of course, if the lesion progresses, it will cross different zones or invade to the opposite side. The laryngeal cancer in the subglottis is very rare; the early symptoms of laryngeal cancer in the supraglottis are atypical and easy to be misdiagnosed, and the tumor is easy to metastasize to lymph nodes, so the treatment is mainly traditional surgery + radiotherapy; laryngeal cancer in the glottis, i.e. vocal cord cancer, is the most common clinically and can appear hoarseness in early stage, which is also easy to be detected early, i.e. the clinical (T) stage of the tumor is generally early (T1 or T2), and the treatment options are traditional surgery or radiotherapy or laryngoscopic CO2 treatment. Radiation therapy or laryngoscopic CO2 laser surgery can preserve better articulation for such lesions, but the radiotherapy machine is demanding and the delayed reaction is obvious. Therefore, it is still a good choice for those who are physically intolerant to surgery; traditional surgery for laryngeal cancer in the vocal tract requires tracheotomy and gastric tube insertion, which are still painful to patients, and some patients may wear tracheal tube for life, which is painful to say the least; laryngoscopic CO2 laser-assisted laryngeal microsurgery supports the treatment effect of early laryngeal cancer in the vocal tract, which is the same as traditional surgery, but can greatly reduce the pain of patients. However, CO2 laser equipment is expensive, and only a few hospitals have the condition and technology.