Sudden stomach pain, there are several conditions: 1, diet-related leading to acute gastritis. Such patients often have a history of unclean diet or eating acidic or spicy irritating food, resulting in stomach pain, and it is recommended to take rectification and Daxil to repair the mucosa of the stomach. 2, peptic ulcer. The pain of peptic ulcer is sometimes sudden and relatively mild, not as intense as perforation. 3. Stomach pain caused by peptic ulcer and perforation. This kind of pain is very intense, sudden knife-like severe pain, pain patients can hardly tolerate, abdominal muscle tension, abdominal pressure pain, rebound pain. At this time, we should promptly consult the hospital to improve the abdominal CT and abdominal standing film for further clarification, and after clarification, further surgical treatment is recommended for surgery.