Benign pancreatic body tail resection for 3 weeks and there is still drainage, amylase more than 20,000 belongs to the normal phenomenon of the postoperative period, can be observed for a period of time, if there are other uncomfortable symptoms need to consult a doctor in a timely manner, improve the relevant examination, and active treatment. Benign pancreatic body tail resection will be due to local inflammation and oozing, the more common reason may be due to the pancreatic body tail due to surgical resection of a section, this section needs a certain amount of time to recover, in this recovery period will continue to secrete pancreatic fluid, at this time can be through the drainage tube for a continuous drainage. After pancreatic surgery to remove part of the pancreas, amylase will flow out into the fluid, and the amylase level will gradually return to normal during the recovery period because the section is healing. Benign pancreatic body tail resection requires prompt medical attention if discomfort occurs, and treatment should not be delayed to avoid worsening of the situation.