Pancreatic malignant tumor is a type of disease with a very high degree of malignancy in clinical practice, and only a small percentage of patients with early stage pancreatic malignant tumor have the opportunity to have the tumor removed surgically. Most of the patients with pancreatic malignant tumor belong to the middle and late stage malignant tumor, once the tumor lesion is found, the chance of surgical cure is lost. So how to avoid recurrence of tumor for patients with pancreatic malignant tumor treated by surgery clinically, let’s learn together below. Due to the special nature of pancreatic malignant tumor, after surgical removal of pancreatic malignant tumor, it still has a certain recurrence rate after surgery. Therefore, the recurrence of pancreatic malignant tumor can be prevented by the following methods: 1. chemotherapy treatment, if the general condition of patients after pancreatic malignant tumor surgery is still acceptable and the patients recover better after surgery, in this case, chemotherapy treatment can be considered to prevent the recurrence of pancreatic malignant tumor. Since chemotherapy treatment has different degrees of damage to the liver and kidney function of patients, if patients have liver and kidney insufficiency, chemotherapy treatment should not be reluctantly administered in this case. Because chemotherapy treatment can only play a certain preventive role, it can not guarantee that the patient will not have recurrence of pancreatic malignant tumor. Radiotherapy, radiotherapy and chemotherapy are often adjuvant treatments for pancreatic malignant tumors after surgery, which have the effect of inhibiting recurrent pancreatic malignant tumors in some patients. However, radiotherapy treatment still has different degrees of damage, so patients are advised to choose carefully. With the continuous progress of medical level, the genetic testing technology of tumor is developing rapidly. For some patients with pancreatic malignant tumors, genetic testing after surgery can clarify the effective target drugs for tumors, and targeted drugs can inhibit the recurrence of tumor cells.