Nine-year-old girl always stomach pain is usually caused by appendicitis, parasitic infection, constipation and other conditions. 1. Appendicitis: 9-year-old girls, the abdominal cavity of the intestinal tube is not fully developed, it will be easy to fecal balls into the appendix and cause appendicitis, which will lead to total stomach pain. 2. Parasitic infections: If 9-year-old girls intestinal parasitic infections, there will also be a total stomach pain, usually accompanied by roundworm spots, or anal itching and other symptoms. 3. Constipation: If a 9-year-old girl is constipated, it can lead to dilation of the intestinal tubes, which can lead to total stomach pain. There may be other reasons for the 9-year-old girl’s total stomach pain, 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.