The apical abscess of the child’s milk tooth is mainly caused by bacteria entering the root of the tooth, resulting in the collection of pus, which is mainly treated by two ways: medication and surgery to cure the disease and avoid affecting normal life. 1. medication: commonly used drugs mainly include pediatric cefixime granules, amoxicillin capsules, azithromycin capsules, etc., to eliminate inflammation, relieve the abscess caused by root tip infection, and avoid the subsequent development of painful symptoms. 2. Surgical treatment: Through surgical tools, the abscess site will be cut open to drain the pus into the mouth, prompting the abscess to shrink rapidly and avoiding the irritation of the alveolar bone, which will affect the health of the tooth. It is recommended to go to the hospital as soon as possible after the emergence of apical abscess, under the guidance of the doctor for medication or surgical treatment, to avoid the subsequent development of the child’s teeth development, resulting in adverse effects.