Pancreatic cancer is a type of malignant tumor of the digestive tract that is difficult to detect in its early stages. The signs of pancreatic cancer mainly include the following: First, among people with diabetes, if there is a sudden occurrence of uncontrollable blood sugar levels, unexplained general fatigue, abdominal pain, decreased appetite, or even jaundice, one should highly suspect the possibility of pancreatic cancer. Second, individuals with a family history of cancer who recently experience unexplained symptoms related to the digestive tract should also be alert to the possibility of pancreatic cancer. Third, some patients may experience unexplained rapid weight loss accompanied by significant jaundice, which should also be considered as potentially indicating pancreatic cancer.