Tongue rot may be caused by tongue trauma, oral ulcers, tongue cancer and so on. 1. Tongue trauma: If tongue bite or burn is caused by not paying attention to eating or consuming too hot food, it can also cause localized blistering and ulceration of tongue in serious cases, at this time, it is necessary to avoid re-stimulation and maintain oral hygiene, and the symptoms can be recovered gradually. 2. Oral ulcers: If the residual crowns and roots in the oral cavity are relatively sharp, they may stimulate the nearby tongue and cause traumatic ulcers, which will be manifested as ulcers on the surface of the tongue. 3. Tongue cancer: it may cause symptoms such as cauliflower-like swelling and ulcers on the tongue, and may cause erosion when the scope of involvement is large. It is suggested that people with symptoms of tongue rot should go to the hospital in time, improve oral examination, find out the cause and cooperate with the treatment, so as to avoid delaying the condition.