Sore stomach may be caused by gastrointestinal diseases, liver and gallbladder diseases, urinary system diseases, female gynecological diseases and so on. 1. Gastrointestinal diseases: for example, acute gastroenteritis, chronic gastritis, peptic ulcer can cause stomach ache. 2. Liver and gallbladder diseases: for example, acute hepatitis, alcoholic liver disease, cholecystitis, gallstones can cause stomach pain, usually in the right upper abdomen. 3. Urological diseases: for example, urethritis, acute cystitis can cause stomach pain in the lower abdomen, accompanied by frequent urination, urinary urgency, urination pain and other symptoms. 4. Female gynecological diseases: such as adnexitis, endometritis, ovarian cysts, etc. can cause lower abdominal pain, accompanied by abnormal leukorrhea and other symptoms. There are many reasons for stomach pain, it is recommended to consult a doctor in time to identify the cause of the disease and follow the doctor’s instructions for treatment.