Pain in the middle part of the stomach below the chest is considered to be an abdominal organ disease, mainly intestinal disease or disease related to the liver, gallbladder or spleen. Abdominal color ultrasound should be performed to further investigate, and if necessary, it should also be combined with abdominal CT scan, enhanced examination and endoscopy and other related examinations. There are many causes of abdominal pain, including peptic ulcers, gallbladder stones and cholecystitis, intestinal tumors, acute gastroenteritis, and chronic inflammatory diseases of the intestine. The pain caused by ulcer disease is related to diet. While adjusting the diet structure, proton pump inhibitors can be applied appropriately, commonly used is omeprazole orally, which can relieve the condition. In the case of pain caused by cholecystitis, surgery is the treatment of choice in severe cases.