The reasons for baby tongue blisters include the following: a. Diet: eating food with too high temperature burns the mucous membrane of the tongue, causing capillary rupture, exuding more fluid and forming blisters or blood blisters. Second, teeth: newly erupted mandibular milk incisors with sharp cut ends, or milk teeth with severe caries, forming residual roots and crowns, often rubbing the mucous membrane of the tongue abdomen and lateral edge of the tongue and forming blisters, or breaking down and producing ulcers. Herpetic stomatitis: it can be in the lip, cheek, tongue mucosa and other parts of the dense clusters of small blisters, which can gradually expand and fuse with each other to produce larger blisters. Fourth, hand, foot and mouth disease: baby with hand, foot and mouth disease, will form a variable number of small blisters on the tongue, soft palate and other places, about 5-7 days can gradually heal.