Most cases of swollen intestinal lymph nodes in children are not serious. Usually, swollen intestinal lymph nodes in pediatric patients are found during abdominal ultrasound in children and are diagnosed as mesenteric lymphadenitis. However, mesenteric lymphadenitis, which is not a serious disease in pediatric patients, is usually a reactive enlargement due to inflammation from recurrent respiratory and gastrointestinal tract infections and is a legacy change caused by inflammation. Therefore, simple enlargement of the mesenteric lymph nodes in children without fever or signs of infection, such as low blood count leukocytes, usually does not require treatment with antibiotics. Some parents think that abdominal pain in children is related to enlarged intestinal lymph nodes, but in fact it is not very related. Usually recurrent abdominal pain, if it is located around the umbilicus, is mostly considered to be indigestion or weakness of the spleen and stomach. Mesenteric lymphadenitis, enlarged mesenteric lymph nodes, only need anti-inflammatory treatment if they are accompanied by signs of infection, such as recurrent fever, abdominal pain, routine blood tests with white blood cells over 10,000/mm^3 or higher or CRP. If the intestinal lymph nodes are very large and have an abnormal morphology, the possibility of lymphoma needs to be excluded.