The occurrence of laryngeal cancer may be related to gene mutation, smoking, alcoholism, human papillomavirus, malnutrition, vocal cord vocal damage and so on. 1. Gene mutation: the occurrence of laryngeal cancer is related to gene mutation, and these genes are called oncogenes. 2. Smoking: Smoking is the most important risk factor for laryngeal cancer, and the more you smoke, the greater the risk of cancer. Second-hand smoke also increases the risk of laryngeal cancer. 3. Alcohol abuse: Heavy drinking significantly increases the risk of laryngeal cancer. 4. Human papillomavirus: Infection with high-risk human papillomavirus will increase the risk of laryngeal cancer. 5. Vocal injury of vocal cords: when vocalizing, the vocal cords vibrate and rub the most intense part, and the middle part of the vocal cords is the tumor-prone part. If laryngeal cancer is diagnosed, it is recommended to go to hospital for treatment in time.