Back pain caused by pancreatic cancer is mainly back pain, accompanied by symptoms of pancreatic cancer, such as poor appetite, lethargy and even jaundice, which may be combined with symptoms of diabetes, because pancreatic cancer occurs in different parts of the pancreas, if it occurs in the head of the pancreas it may be accompanied by obstructive jaundice, and if it occurs in the pancreatic body or the tail it will affect glucose metabolism, which will lead to the symptoms of diabetes. Ordinary low back pain mainly manifests as muscle pain, back pain and soreness, which will be significantly reduced after activities, without obvious digestive symptoms, ordinary low back pain may also be accompanied by clinical manifestations such as numbness of both lower limbs or even paraplegia. Pancreatic cancer lumbar pain can also show persistent pain or even pain aggravated at night. If lumbar pain is accompanied by gastrointestinal symptoms, it is necessary to think about the possibility of pancreatic cancer, and it is necessary to do CT scanning of the upper abdomen and enhancement examination to make sure that there is pancreatic space-occupying lesion.