Tummy pain in young children is usually considered to be caused by digestive system diseases and inguinal hernia, which are analyzed as follows: 1. Digestive system diseases: including common indigestion, intussusception, gastroenteritis, gastrointestinal dysfunction, etc., will lead to the symptoms of stomach pain in children, may also be accompanied by nausea, vomiting, diarrhea and other symptoms. 2. Inguinal hernia: If a toddler suffers from a hernia, the abdominal wall tissue is relatively weak, when the pressure in the abdomen rises it may lead to intestinal tubes or other organs, bulging out from the defect, causing abdominal pain and other symptoms. There may be other reasons for toddlers’ stomach pain, so parents are advised to take their children to the hospital for a checkup to identify the cause and treat the symptoms.