Baby mouth blisters may be a lack of vitamin B in the body, and may be due to excessive fatigue and a lot of toxins in the body, and caused by the phenomenon of fire. In the usual way to develop good habits, pay attention to as little as possible to eat food on fire, usually pay more attention to rest, drink more water, then the baby mouth blister is what is going on? Here are some of the reasons. 1, baby mouth blisters may be too much internal fire, should drink more water during the day to supplement water, usually best not to let the baby eat spicy food, it is best to stay away from barbecue food. Don’t let your baby stay up all night on fire, eating too much will trigger the corner of the mouth blisters. If your baby has a big fire blister on the corner of the mouth and it’s painful and ugly, it’s basically because of the fire and not enough water caused by drinking. 2, the corner of the baby’s mouth blisters may be a viral infection, if the baby lips blisters, and feel pain, and have a fever. Then the baby is basically a viral infection or caused by hand, foot and mouth disease. If the palms of the hands on the feet and perianal blisters, then it is likely to be hand, foot and mouth disease. You should eat more fresh fruits and vegetables to replenish some trace elements and vitamins that your baby’s body needs.