The tongue is prone to blood blisters may be trauma, herpes, or mouth ulcers and other diseases. 1. The presence of stumps and crowns in the oral cavity, sharp tooth tips can damage the tongue, the tongue is stabbed with blood blisters, you can remove the stumps that have no retention value, round the sharp tooth tips, the blood blisters can be healed and disappeared. 2. Oral herpes virus infection can also cause blood blisters, you can use antiviral drugs such as ribavirin, or topical application of drugs to relieve. 3. Oral ulcers in the oral mucosa manifested as redness, swelling, concave pain, low immunity will also appear blood blisters, usually about two weeks can be self-healing. Therefore, the tongue is prone to blood blisters is a manifestation of trauma, oral herpes or ulcers can also be combined with blood blisters, need to go to the stomatology department to consult a doctor, the use of drugs need to follow the doctor’s advice.