In recent years,the study of tongue images of cancer patients has been widely carried out. It has also achieved certain results in assisting clinical diagnosis,guiding tumor staging,judging prognosis,and assessing the physical condition of patients after radiotherapy and chemotherapy. However,the subjectivity of tongue diagnosis is relatively strong. There are great differences in the diagnostic criteria,and there is few microscopic study of the mechanism of tongue image changes. With the development of sci...