Pancreatic surgery is one of the more invasive surgeries in clinical practice, and the most fatal complication after pancreatic surgery is the occurrence of pancreatic fistula. Under normal circumstances, pancreatic fluid secreted by the pancreas is discharged into the intestine through the pancreatic duct, and pancreatic enzymes are activated to help the body digest food. After pancreatic surgery, if the pancreatic fluid is discharged into the abdominal cavity pancreatic enzyme activation, once the inhibited enzyme invades the blood vessels, it can cause rupture and bleeding of the patient’s blood vessels and induce abdominal hemorrhage. If pancreatic enzymes invade into the intestinal canal, it may cause damage to the intestinal canal and lead to intestinal fistula, causing serious abdominal infection. Therefore, the occurrence of pancreatic fistula can cause serious complications in the abdominal cavity and endanger the lives of patients. If the amount of pancreatic fistula is small, it is possible for some patients to heal on their own through adequate drainage. Once the amount of pancreatic leakage is larger and the patient has serious complications, a secondary surgical treatment is necessary to save the patient’s life.