Squamous cell carcinoma of the left vocal cord is a malignant tumor that occurs in the larynx, and its condition is serious enough to cause lymph node metastasis and distant metastasis, so it should be taken seriously after diagnosis. After active treatment, the 5-year survival rate of vocal cord cancer is 80%~85%. Patients with squamous cell carcinoma of left vocal cord will have voice changes, such as hoarseness, which will be gradually aggravated with the enlargement of tumor, and will stimulate coughing, sputum, hemoptysis under the vocal folds, and even breathing difficulty caused by blockage of vocal folds, or even choking which is life-threatening, and further enlargement of the mass may even block the entrance of esophagus, which will cause swallowing difficulty. Therefore, once squamous cell carcinoma of left vocal fold is diagnosed, patients should pay attention to it, especially in early stage, and take surgical treatment or radiotherapy as early as possible, which can delay the development of the disease and prevent life-threatening situations such as dyspnea and dysphagia.