Girls with stomach pain and diarrhea may be menstrual cold or improper diet, should adjust the diet, pay attention to warmth; may also be acute gastroenteritis, should ceftriaxone anti-infective treatment; may also be gynecological inflammation, should be metronidazole anti-infective treatment. 1. Physiological reasons: girls menstruation cold or eat too much cold, greasy, spicy stimulating food, stimulate the gastrointestinal tract, there may be stomach pain and diarrhea, should adjust the diet, avoid eating these foods, pay attention to keep warm. 2. Acute gastroenteritis: unhygienic diet leads to inflammation of the gastrointestinal tract caused by bacteria entering the gastrointestinal tract, resulting in stomach pain and diarrhea. Should ceftriaxone, levofloxacin and other anti-infective treatment, scopolamine antispasmodic analgesic, montelukast antidiarrheal treatment. 3. Gynecological inflammation: endometritis, salpingitis, pelvic inflammatory disease and other gynecological inflammation can also stimulate the rectum, stomach pain and diarrhea symptoms, but also fever, leukorrhea. Anti-infective treatment should be directed at the pathogen, such as quinolones, metronidazole and so on. Women’s stomach pain and diarrhea in addition to physiological causes, should go to the hospital, under the guidance of the doctor to identify the causes and targeted treatment.