Left upper abdominal pain can be a sign of pancreatitis, but it is also important to be wary that it is the result of other conditions, such as gastric ulcers, colorectitis, and colorectal tumors. Left abdominal pain is a relatively common symptom manifestation of pancreatitis and cannot be ruled out as a sign of pancreatitis at this time. Pancreatitis left abdominal pain is mainly due to the reaction caused by the blockage of the pancreatic ducts can not drain the pancreatic fluid in a timely manner, and in severe cases, it will lead to pancreatic peritoneal swelling, and the degree of pain will be significantly increased. If it is caused by the disease, some patients will also have nausea, vomiting, jaundice and other symptoms. However, left upper abdominal pain, in addition to pancreatitis, should also be alert to gastric ulcer, colorectal inflammation or colorectal tumors and other diseases caused by these are digestive diseases, when the condition is aggravated, the involvement of the left upper abdominal area will be obvious pain, and will be accompanied by acid reflux, bowel movement abnormalities and other symptoms. If left upper abdominal pain occurs frequently, you should consult a doctor in time and carry out treatment after the cause is clarified through abdominal CT, gastroscopy and enteroscopy.