The severity of pancreatitis can be differentiated by definition and symptoms. 1. Definitionally: (1) Mild pancreatitis, the patient’s condition is not serious, there is edema of the pancreas, relief can be obtained after treatment and can be cured; (2) Severe pancreatitis, the patient after the onset of the disease even caused part of the pancreas necrosis, resulting in infection, shock and other symptoms, without timely treatment will be life-threatening. 2. Symptoms: (1) Mild pancreatitis will cause abdominal pain, abdominal pain in the whole abdomen or the left upper abdomen extending backward, in the early stage of the onset of the disease will have a slight fever and nausea and vomiting symptoms. The symptoms of mild edematous pancreatitis are not particularly severe and can be relieved relatively quickly with treatment. (2) Severe pancreatitis abdominal pain will last longer, the pain in the abdomen will increase, and even symptoms such as hypotension and shock may occur. This patient will also have breathing difficulties, full abdominal distension, rebound pain, etc. In severe cases, there will be consciousness disorder, gastrointestinal hemorrhage and other adverse reactions. If you have pancreatitis, you must go to the hospital for examination and treatment in time so as not to miss the best treatment time.