Infants with a white pustule on the gums need to identify the cause, may be caused by horse teeth, thrush, gum inflammation, etc., under the guidance of the doctor for targeted treatment, such as medication. 1. Horse’s teeth: mostly occurring in 4 to 6 weeks of infants, the accumulation of epithelial cells or mucous gland secretions accumulated in the formation of small yellow-white particles, mostly located in the mouth of the palate line and the gums, is a special physiological manifestations of newborns, generally do not need treatment; do not blindly wipe the mucous membrane or pick through. 2. Thrush: Most common in newborns and infants, manifested as white milk clot-like dots or small flakes covering the surface of the oral mucosa. Choose the right concentration of sodium bicarbonate solution to clean the oral surface of the child; consider the use of antifungal drugs such as mycobacteria in severe cases. 3. Inflammation of the gums: babies do not pay attention to hygiene during breastfeeding, it is easy to cause infection of the gums, ulcers can appear as white pus. When serious, you can take antibiotics, such as metronidazole, etc.; at the same time, you can use hydrogen peroxide to rinse the mouth. However, other factors can not be ruled out, parents need to take the child to the doctor in time, the doctor to give targeted treatment, parents should not blindly self-medication for children.