Girls go to the toilet stomach discomfort is considered to be caused by factors such as menstruation, but also may be caused by acute gastroenteritis, inflammatory bowel disease and other diseases, the former generally do not need special treatment, the latter need to be under the guidance of the doctor for targeted treatment, such as medication, surgery and so on. 1. Menstruation: Pelvic congestion during menstruation may produce pressure on the rectum, causing girls to go to the toilet stomach discomfort; 2. Disease factors: acute gastroenteritis can have abdominal pain, diarrhea, combined with bacterial infection can use ciprofloxacin and other drugs anti-infective treatment, with severe diarrhea can use loperamide to stop the diarrhea; ulcerative colitis can have abdominal pain, diarrhea, mucus blood stools of the symptom, need to comply with the doctor’s orders to use salicylsulphonylpyridine, prednisone and other drugs to treat the complications of intestinal perforation when the recommendation of the surgical treatment. When a girl goes to the bathroom with an upset stomach, it is recommended to go to the hospital after excluding non-pathological factors.