Apical inflammation refers to periapical inflammation of milk teeth, which can be treated with surgery and medication. 1. Surgical treatment: If it is in the acute attack period, open pulp drainage can be taken to achieve the effect of anti-inflammatory and analgesic by dredging the root canal. If there is localized abscess, incision and drainage is needed. After the acute phase is relieved, root canal treatment should be considered, mainly to control the inflammation and try to preserve the baby tooth. 2. Medication: If the redness, swelling, heat and pain caused by the infection are severe, antibiotics such as amoxicillin, metronidazole, cefuroxime, ceftriaxone and non-steroidal anti-inflammatory and analgesic drugs such as ibuprofen and acetaminophen should be used under the guidance of the doctor, which can effectively relieve the discomfort. Regarding the treatment of apical periapical inflammation of the milk teeth, the aim is to preserve the affected tooth until the period of normal tooth replacement, during which the child needs to strengthen the management of oral hygiene and go to the hospital for follow-up appointments on time, so that the doctor can be easily informed of the changes in the condition.