There are many causes of abdominal pain in girls, such as irritable bowel syndrome, dysmenorrhea, chronic pelvic inflammatory disease, kidney stones, etc. It is recommended to go to the hospital as soon as possible for examination and treatment after a clear diagnosis. 1. Irritable Bowel Syndrome (IBS): typical symptoms such as lower abdominal pain, diarrhea, constipation, etc. Treatment is mainly based on medication combined with changes in lifestyle and dietary structure. 2. Dysmenorrhea: Dysmenorrhea will appear lower abdominal swelling, pain, nausea, diarrhea and other symptoms, some patients have pain during sexual intercourse. The treatment mainly adopts medication, commonly used drugs are ibuprofen, naproxen, medroxyprogesterone and so on. 3. Chronic Pelvic Inflammatory Disease: There will be persistent lower abdominal pain, swelling, abnormal vaginal discharge and other symptoms. Treatment is based on antibiotics, such as ofloxacin, cefoxitin sodium, doxycycline and so on. 4. Kidney stones: patients will have lumbar pain, abdominal pain, accompanied by nausea and vomiting and other symptoms, the treatment should be based on the location and size of the stone to choose drug therapy or extracorporeal shock wave lithotripsy.