Most of the recurrent pus in the gums of 3-year-old babies is caused by apical abscess. It may require root canal treatment, incision and drainage, anti-inflammatory drugs or extraction of the affected tooth, etc. It is recommended to go to the hospital for specific examination and treatment. Most of the recurrent pus in the gums of 3-year-old babies is caused by apical abscesses, and anti-inflammatory drugs can be given to babies appropriately, such as cefaclor, etc. It is recommended to follow the doctor’s instructions according to the condition of the medication. If the abscess is not particularly elevated, the tooth can be drilled to open up the pulp for drainage and root canal treatment. If the abscess is large, you can incise the low part of the enlarged gums to drain out the pus. If the tooth is untreatable, it can be extracted after the acute phase of the abscess has passed. 3 year old baby gums repeated pus is recommended to consult a doctor in time, the above drugs need to be taken under the guidance of a doctor.