The causes of stomach pain include stomach pain caused by infectious factors and stomach pain caused by non-infectious factors. 1. Infectious factors: for example, hepatitis, cholecystitis, gastroenteritis, pancreatitis, cystitis, pyelonephritis, urinary tract infection, pelvic inflammatory disease, salpingitis, prostatitis, seminal vesiculitis and so on can cause stomach pain. Gynecological inflammation is often manifested as stomach pain, irregular menstruation, abnormal leukorrhea and odor. Hepatitis, cholecystitis caused by stomach pain is the right upper abdominal pain, urinary tract infection caused by stomach pain is often accompanied by fever, urinary frequency, urinary urgency, urinary pain. 2. Tummy pain caused by non-infectious factors: for example, inflammatory bowel disease, stones, tumors, cysts, functional disorders, smooth muscle spasm. Common diseases include Crohn’s disease, ulcerative colitis, kidney stones, ureteral stones, liver and gallstones, colorectal cancer, hepatic cysts, gastrointestinal neurosis, and psycho-psychological factors that may lead to stomach pain. There are many causes of stomach pain, do not blindly use medication, or indiscriminate use of prescriptions, to avoid delaying the formal treatment, the patient should actively seek medical attention to prevent further development of the disease.