The self-healing time of abdominal lymphadenitis in children depends on the severity of the disease and cannot be generalized, but needs to be analyzed on a case-by-case basis. In children, there are many lymph nodes on the mesenteric surface of the abdominal cavity, which do not swell under normal circumstances. Lymph node inflammation is an immune response of the body, which plays a self-defense function and is able to swallow viruses and bacteria. If it is a simple lymph node inflammation, no other physical discomfort or mild symptoms, the child’s body resistance is good without special treatment, observation can be, generally with the original disease to improve, abdominal lymphadenitis can be about a week to improve on its own. However, in the case of severe abdominal lymphadenitis caused by intestinal inflammation or intestinal parasites, it usually does not heal on its own and the child needs active symptomatic treatment. During the period of abdominal lymph node inflammation, the child must eat a light diet, eat more fresh vegetables and fruits, and let the child exercise more to speed up the body’s metabolism and promote the improvement of the disease, and if necessary, ask the pediatrician to prescribe medicine to regulate the disease.