Pancreatic pseudopapillary tumor postoperative back pain, physiological condition is due to rest, not related to surgery, pathological condition, may be due to pseudocyst, pancreatic fistula and other postoperative complications. 1. In physiological condition: if the rest is not good after surgery, it may cause the back pain of the patient, because the patient will consider that it is due to the surgery after the surgery, which is not related to the actual situation, and only need to rest. 2. Pathological conditions: pseudocysts can lead to back discomfort, usually self-absorption, if there is pressure on the surrounding tissues need drainage treatment. Pancreatic fistula may cause acidity behind the back due to leakage of pancreatic fluid stimulating the posterior peritoneum, which should be drained and given antibiotic treatment. If the patient has pancreatic pseudo-papillary tumor postoperative back acid, it is best to go to the hospital for examination, do not use drugs without authorization, do not delay, so as not to cause the development of the disease process, and even life-threatening.