There is no quick way to eliminate blisters inside the mouth, if it is caused by trauma, no special treatment is needed, if it is caused by hand, foot and mouth disease, oral herpes simplex and other diseases, you need to take medication, other treatments and other ways to deal with the cause of the disease. 1. Trauma: If menstruation often eat food with too high temperature, causing trauma to the mouth and oral cavity, localized blisters. Since the blisters are relatively small and can be absorbed on their own, there is usually no need for special treatment. 2. Hand, foot and mouth disease: typical symptoms are herpes inside the mouth, hands, feet and other places will appear. Patients in the early stages of the disease can follow the doctor’s instructions to use interferon alpha, ribavirin and other antiviral drugs. 3. Oral herpes simplex: blistering in the mouth is a common symptom of this disease, and fever, headache and other symptoms. Patients need to use 3% acyclovir ointment, 1% penciclovir cream and other antiviral drugs under the guidance of the doctor. For more severe cases, oral medication is required. Secondly, low energy laser treatment is also available. It is recommended that patients with blisters inside the mouth go to the hospital, complete the relevant examinations, and cooperate with the doctor to actively treat the primary disease.