The common cause of blisters on the inner wall of the mouth may be mouth ulcers caused by fire, etc. Patients can use light salt water to rinse and clean the mouth, drink more water, eat more fresh fruits and vegetables to enhance the metabolism of the body and relieve the symptoms. In addition, it may also be related to traumatic blood blisters caused by long-term physical friction of the oral mucosa, dietary stimulation, etc. Patients with ineffective treatment or recurrent disease, there may also be other intraoral diseases, need to go to the hospital to clarify the cause of the relevant treatment: 1. Oral ulcers: mainly related to a variety of factors such as excessive spirit, unbalanced nutritional intake, bites, etc. Patients can form small yellow-white blisters in the inner walls of the mouth, accompanied by significant pain. Oral ulcers are self-healing, but when the area affected is large, you can use lidocaine gel, compound benzocaine gel, as well as oral ulcer scatter, watermelon cream and other topical applications to accelerate the recovery of the local oral mucosa, and remove the irritating factors if necessary; 2, traumatic blood blisters: generally due to eating too hot and hard food, or abnormal tooth structure, poor alignment, etc., which can easily lead to long-term friction of the oral mucosa or Food stimulation, may cause blisters or blood blisters on the inner wall of the mouth, in general, no special treatment is needed. However, when the blisters are large, symptomatic treatment can be carried out in the hospital. The doctor can use a sterile syringe to draw out the blood from the blisters, followed by using sterile tissue scissors to cut out the walls of the blisters, and then using watermelon cream spray or ice borax to spray the affected area, etc. to promote local skin healing. Patients with recurrent disease should also go to the hospital as early as possible to adjust the tooth structure, i.e., adjust (dental conjunction), grind away sharp tooth tips, and remove irritating factors to avoid repeated blistering of the inner wall of the mouth; 3. Mucous gland cysts: mainly related to bad dental chewing habits, can occur in the inner wall of the mouth, with the appearance of blistering. Patients with larger cysts can go to the hospital for surgical removal treatment, and later need to improve bad chewing habits to prevent recurrence of the disease; 4, herpes: when there are multiple blisters on the inner wall of the mouth, it may be due to herpes virus infection, patients are often accompanied by fever, sore throat, muscle aches and other performance. Treatment can be prescribed with oral antiviral drugs such as acyclovir tablets and ribavirin tablets, supplemented with acetaminophen and ibuprofen to relieve pain. Some Chinese medicines also have a certain therapeutic effect, such as anti-viral particles, stomatitis particles, etc., can be applied in accordance with medical advice; 5, other: local burns, local hemangioma and other diseases, may also lead to the symptoms of blistering in the lining of the mouth, has appeared painful discomfort patients can consider going to the hospital for specific diagnosis and treatment. If a patient has a blistering burn, the herpes can be extracted according to medical advice, and then the pain can be relieved by local application of Dacronin solution. Patients with hemangioma often need to be treated by laser surgery, and after treatment, they need to rinse with compound borax gargle daily to relieve local inflammation and promote wound healing. For those who have frequent blisters on the inner wall of the mouth, pay attention to maintaining oral hygiene in daily life, eat a light diet, eat more fresh fruits and vegetables rich in vitamins, do not eat foods that are too hot, too hard, spicy and sour, and do not drink alcohol. Ensure sufficient sleep, avoid staying up late and relax.