Oral cancer is a general term for malignant tumors that occur in the oral cavity. Most of them belong to squamous epithelial cell carcinoma. Oral cancer includes gum cancer, tongue cancer, hard and soft palate cancer, jaw cancer, floor of mouth cancer, oropharyngeal cancer, salivary cancer, lip cancer and maxillary sinus cancer as well as cancers occurring in the skin mucosa of the face and face, etc. It is one of the more common malignant tumors of the head and neck. In China, the main treatments of oral cancer are divided into: surgical resection, radiation therapy, chemotherapy and traditional Chinese medicine. Early stage oral cancer without lymphatic metastasis in the neck should be treated by surgery or radiotherapy alone; for middle and late stage oral cancer, surgery combined with chemotherapy or (with) radiotherapy is more suitable. After surgery or radiotherapy or chemotherapy, we often see patients who come to the clinic with symptoms such as tongue pain, tasteless mouth, dry mouth, loss of appetite, general weakness, insomnia, excessive sweating, etc. Patients with chemotherapy may have bone marrow suppression (white blood cell, red blood cell and platelet reduction, etc.) or abnormal liver function. At this time, the Western medical treatment has ended and entered the clinical follow-up period without special drug treatment. In this period, the Chinese medicine prescribed for each patient according to the different symptoms and tongue and pulse of each patient can relieve the above symptoms, eliminate the above abnormal signs and significantly improve the quality of life of the patient. For patients with chronic inflammation of the oral cavity or recurrent oral ulcers after Western medical treatment, individualized prescriptions can be formulated according to each patient’s clinical performance, which will also have significant clinical effects. In addition, effective control of chronic lesions in the oral cavity can significantly reduce the possibility of recurrence of oral malignancies.