White blisters in the mouth, if they refer to clear blisters, are usually caused by bad lip biting habits. It is usually recommended to go to the dentistry department for timely surgical excision treatment because blisters can recur and do not heal completely on their own. After excision, it is necessary to correct the bad habit of lip biting to avoid recurrence. There is no scar after excision, and the stitches can be removed in about 7 days, and it is better to maintain oral hygiene to heal. Also herpes in the mouth, if it refers to a white ulcer, you can apply drugs that promote healing. Commonly used medications are tretinoin ointment, and a gel of recombinant human epidermal growth factor. You can also use watermelon cream spray, or open-throat sword spray, etc. sprayed onto the surface of the ulcer, which can promote the healing of the ulcer. It is also usually recommended to maintain good oral hygiene and timely supplementation of B vitamins or multivitamins to regulate the symptoms of anemia, which can avoid the phenomenon of white blisters in the mouth.