Gum cysts in infants at three months can be operated on, and most infant gum cysts can break up and disappear on their own a few days after birth. 1. Gingival cysts are primary cysts that are commonly found in the alveolar ridge of infants. Its pathogenesis is due to the dental plate to the alveolar bone in the process of growth to form teeth, the epithelium of the plate is not degraded upward, part of the epithelial beads in the gingiva, and some of the residual epithelium of the plate in the gingiva, cystic degeneration occurs, which leads to the formation of gingival cysts. 2. Gingival cysts in infants are usually asymptomatic and do not affect the infant’s sucking and ventilation. Most of them rupture on their own in the first few days after birth, which is self-limiting and transient. 3. However, there are also a few infants whose gum cysts will rupture and disappear on their own in 2 weeks to 5 months, and will show different degrees of enlargement, infection, pain and other symptoms, at which time the oral surgeon will give surgical incision and drainage according to the condition of the child. If the diagnosis is confirmed and the child has obvious clinical manifestations, it is recommended that the family follow the doctor’s instructions and actively cooperate with the treatment, so as to avoid delays or adverse reactions.