Children’s old stomach pain may be related to indigestion, may also be due to intestinal parasitic infection, recurrent enteritis and other causes. 1. Indigestion: some children due to the usual diet without moderation, often overeating, easy to lead to indigestion, it may cause old stomach pain, may also be accompanied by abdominal distension, poor appetite and other manifestations. 2. Intestinal parasite infection: some children usually do not pay attention to dietary hygiene, do not wash their hands before and after meals, or often suck dirty hands, which can easily lead to intestinal parasite infections, and may show old stomach pain. 3. Repeated enteritis: usually caused by the gastrointestinal tract is infected by bacteria, viruses and other pathogens, in the stimulation of inflammation, it may cause old stomach pain, may also be accompanied by nausea, loss of appetite and other manifestations. The child’s old stomach pain, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.