Painful bags on the palate of the mouth, consider that it may be caused by inflammation of the gums, dental disease or oral herpes, which need to be examined in the hospital. 1. Gum inflammation. Oral palate may be gingivitis or periodontitis, teeth and other local irritation will cause red, swollen and bleeding gums, when the symptoms are serious, periodontal abscesses can occur, the need for periodontal treatment to eliminate inflammation of the gums. 2. Dental diseases. When the maxillary teeth apical periodontitis, inflammation can penetrate the bone wall to reach the gums, causing alveolar abscess, touch with a fluctuating sense of formation, the need for abscess incision and root canal treatment. 3. Herpes. When the body is infected with herpes virus oral palate area can appear pinpoint-sized dense blisters, redness, swelling and pain, blisters are easy to rupture, need to take antiviral drugs, such as acyclovir ribavirin treatment. The specific cause of pain in the oral palate, need to go to the hospital to check the oral cavity and systemic conditions can be determined, the specific can consult a professional physician’s opinion.