Whether ulcers on the edge of tongue are tongue cancer needs to be diagnosed through pathological examination, and it should be noted that one should consult doctor in time after discomfort occurs. Tongue cancer is a malignant tumor caused by many factors, such as betel nut chewing, long-term smoking and other bad habits; human papilloma virus infection and so on. Ulcers may appear on the tongue after the disease. When doctors suspect tongue cancer, they usually make a preliminary judgment of the disease through visual examination; then confirm the diagnosis of the disease through pathological biopsy; and then judge the scope of the lesion by CT, MRI and other imaging examinations. In addition to ulcers, tongue cancer is often accompanied by clinical manifestations such as tongue pain, tongue movement disorder, difficulty in eating and pronunciation, and rapid weight loss. After similar discomfort occurs, it is necessary to go to hospital for standardized diagnosis and treatment in time to avoid delaying the condition.