Very early pancreatic cancer can be treated without chemotherapy after surgery, but general pancreatic cancer, which is already in the middle or late stage when found, is recommended to be treated with radiotherapy after surgery. Pancreatic cancer is a kind of malignant tumor of digestive tract, the onset of the disease is generally more insidious, the progress is more rapid, generally there are no obvious symptoms in the early stage, it is not easy to be detected, and in the middle and late stages, jaundice, emaciation, abdominal pain and other symptoms can appear. Early pancreatic cancer, symptoms are not obvious, and imaging examination is also general, it is more difficult to be found and diagnosed. Generally, for early pancreatic cancer with tumor diameter less than 2cm and without lymph node metastasis and distant metastasis, after surgical resection, radiotherapy can be avoided. However, in clinic, due to the characteristics of pancreatic cancer, most of the pancreatic cancers are already in the middle and late stages when they are found, and the simple surgical resection may not be able to achieve the ideal therapeutic effect, and generally radiotherapy is needed to prevent the tumor from recurring. For the treatment of pancreatic cancer after surgery, it is recommended to seek medical treatment, follow the guidance of professional doctors and standardize the treatment.