Tummy ache caused by lymphangitis in children is not dangerous if it is treated in time, but if it is not treated in time, it may lead to further expansion of inflammation, which is relatively dangerous. Lymphangitis in children is a relatively common disease in children, which may be caused by upper respiratory tract infections or inflammation of the intestinal tract itself, etc. The symptoms of tummy ache are usually related to inflammation of the mesenteric lymph nodes. The prognosis is generally good and the risk is not high if the patient is treated promptly and actively. If not treated in time, the inflammation may expand, causing other organisms to become infected and other complications such as fever, diarrhea, sepsis, etc., which is relatively dangerous. Therefore, children need to go to the hospital in time for treatment when they have stomach pain caused by lymphatic inflammation, and should not be left unattended.