There is no fastest way to get blisters in the mouth, most of the blisters in the mouth are caused by improper diet, traumatic mucosal blood blisters, viral infections, and need to adjust the diet, adequate rest, and antiviral treatment. 1. If recently often eat spicy stimulating greasy food, it is easy to cause oral problems manifested in the mouth blisters, there will be mouth ulcers and so on performance, this time you need to adjust the diet, eat more light easy to digest food, usually adjust the work and rest, do not stay up all night, often exercise to improve immunity. 2. traumatic mucosal blisters are mainly caused by traumatic factors, such as eating hard and crunchy food to the mucous membrane under the blood vessels broken, thus forming blisters, occurring in the junction of the hard and soft palate, need to pay attention to eat less hard food, eat more soft and easy to digest food, maintain a light diet, adequate rest, sleep, so as to promote the recovery of the wound. 3. If it is a viral infection caused by blisters in the mouth, such as herpes gingivostomatitis, there will also be red and swollen gums, blisters are usually clusters of small blisters, the need for antiviral treatment, such as acyclovir, vaxilovir and so on, need to be under the guidance of the doctor to use the drug. The blisters in the mouth, need to actively seek medical attention, clear cause for targeted treatment.