Symptoms of the early stages of oral lichen planus cancer mainly include recurrent or persistent ulcers, erosions, and blisters in the same area. Lichen planus is a common chronic inflammatory disease of the oral mucosa, which is prevalent in middle-aged people. However, it is less common in the elderly and children, and is more prevalent in women than in men. Oral lichen planus is usually accompanied by irritation, pain, roughness and discomfort. If oral lichen planus has long-term erosion that is difficult to heal, it is necessary to be alert to the possibility of cancer, which is usually manifested as erosion and blisters in the same area. There are varying degrees of damage to the skin epithelium. This erosion or ulcer does not heal, or after a period of improvement, it recurs in the same area, and there are basal hardening white spots, white plaques, with a rough or plush surface. Some of them will appear atrophy phenomenon, skin reddish and bright, these should be alert to precancerous lesions. Oral lichen planus requires strengthening oral hygiene, avoiding adverse stimuli, stopping smoking, alcohol abuse, eating too hot food, as well as developing a good habit of regular medical checkups. If there is pain, bleeding, vesicles continue to fail to improve, you should seek timely medical treatment to rule out the possibility of cancer.