External drainage for pancreatic head cancer is mainly used after surgery, usually to drain the exudate and bile, and it takes a longer time to keep the surgical wound clean and relieve the obstruction of the digestive tract, thus promoting recovery. However, it is usually not necessary to hang it all the time, and it can be removed after there is no more large amount of exudate, but the exact time needs to be decided according to individual recovery. After pancreatic head cancer surgery, there will be continuous leakage of tissue fluid from the trauma surface, which is not conducive to the recovery of the trauma surface; moreover, intestinal obstruction or biliary obstruction may easily occur, which may cause jaundice and affect health. Therefore, external drainage can be performed to drain excessive exudate and bile, thus promoting recovery. External drainage should be hung until there is no longer a large amount of exudate, the surgical wound has basically recovered, and the intestinal obstruction or biliary obstruction has been restored to clear, the exact duration of hanging depends on the individual wound healing and physical recovery, and cannot be generalized. Generally, during external drainage, attention should be paid to local cleanliness and dryness to avoid wound infection. In addition, it should be noted that for patients with pancreatic head cancer, they can be treated by surgical resection, and later they also need to cooperate with chemotherapy or radiotherapy as postoperative adjuvant treatment. During the recovery period, patients should pay more attention to rest and try to rest mainly in bed. In addition, patients need to pay more attention to diet adjustment and eat more highly nutritious foods, such as eggs, milk and lean meat, which can replenish the nutrients required by the body in time.