The sequelae of pancreatic tail resection include pancreatic exocrine insufficiency and pancreatic endocrine insufficiency, which need to be analyzed specifically. 1. Pancreatic exocrine insufficiency: pancreatic exocrine insufficiency means that pancreatic juice secretion is reduced and digestive function is impaired. It can be manifested as loss of appetite, feeling of fullness in the upper abdomen after eating, malnutrition and wasting, and there will be a lack of many vitamins, which can seriously lead to steatorrhea. 2. Pancreatic endocrine insufficiency: pancreas can secrete insulin, glucagon and other hormones that regulate blood sugar, endocrine insufficiency can lead to hormone reduction, unstable blood sugar level, and diabetes mellitus and other symptoms may occur. Pancreatic tail resection should pay attention to diet to avoid large fluctuations in blood sugar levels. 3. Pancreatic fistula: after pancreatic tail resection, pancreatic fistula may appear at the broken end, usually about a month can be relieved, some patients delayed, pancreatic fistula time can be up to six months. Pancreatic fistula can take as long as half a year. If the sequelae of pancreatic tail resection appear, you should go to the hospital in time to improve the relevant examination, and standardize the treatment under the guidance of the doctor.