The self-healing time of mesenteric lymphadenitis in children cannot be generalized, but depends on the severity of the disease and the physical condition of the child, and should be analyzed on a case-by-case basis. Mesenteric lymphadenitis in children is a viral infection, most of the time caused by complications after a cold. If the child does not have obvious symptoms or has mild symptoms and is usually in good health, he or she usually does not need treatment and can heal on his or her own in about 7 days. If there are obvious symptoms such as abdominal pain and diarrhea, accompanied by loss of appetite and pallor, and the lymph nodes are found to be congested and enlarged after examination, and a small amount of inflammatory exudate is seen in the abdominal cavity, it usually cannot heal on its own and requires timely symptomatic treatment, mainly anti-inflammatory treatment with antibiotics. In daily life, children should pay attention to adjust their habits, avoid strenuous exercise, pay attention to abdominal warmth, etc.. Diet should avoid cold and stimulating foods.