More than 90% of malignant tumors in the larynx are squamous epithelial carcinomas. Tumors from the salivary glands account for only 1% of laryngeal malignancies. Malignant tumors in the larynx can also arise from soft tissues and scaffold structures in the larynx, including chondrosarcoma, fibrosarcoma, fibrous histiocytoma, carcinoid tumors, liposarcoma, and lymphoma. The larynx can be divided into supraglottis, glottis and infraglottis with the vocal cords as the boundary. The supraglottic region is divided into: 1. supraglottic region (including the marginal region), including: supraglottic epiglottis (including the tip of the epiglottis), both sides of the arytenoid fold, both sides of the arytenoid cartilage area. 2, the upper part of the vocal folds, including: subglottic epiglottis laryngeal surface, both sides of the ventricular zone, both sides of the laryngeal chambers. The vocal fold area is further divided into: both sides of the vocal folds, the anterior union, the posterior union and other sub-regions. Subglottic region: the lower edge of vocal cords to the lower edge of cricoid cartilage, including the anterior, posterior, left and right walls. According to the above anatomical subdivisions, laryngeal cancer is divided into supraglottic, glottic and infraglottic types. Some people also classify laryngeal cancer that occurs in the lateral laryngeal chambers as transglottic type. Laryngeal cancer is most likely to occur in the vocal fold (55%-75%), followed by supraglottis (24%-42%) and subglottis (1%-6%). In most regions of China, laryngeal cancer of the vocal fold is the most common, followed by supraglottis laryngeal cancer and subglottis cancer is very rare. However, in Northeast China, supraglottic laryngeal cancer is significantly more common than glottic laryngeal cancer, which may be related to the higher incidence in women, but subglottic cancer is also very rare.