This study is a multi-center observational study. The start time for data collection is August 31, 2019. Patients who have been treated at our institution from August 31, 2019, who were diagnosed with pancreatic tumors on or before August 31, 2019 (diagnosed in our hospital or outside hospitals) would all meet the inclusion conditions of the study and be considered enrollment. Patients' baseline and treatment data will be collected under informed concent. The combination of medical big data governance and the leading technology of the big data platform uses real world data to improve the quality and efficiency of pancreatic tumor diagnosis, treatment and scientific research.

Inclusion Criteria:

1. Age ≥ 18, both male and female;
2. Patients with primary pancreatic tumor diagnosed by histology, cytology or imaging;
3. Clinical or pathological staging is locally advanced or metastatic pancreatic tumor (newly diagnosed or after surgery and other treatments);
4. You can accept or have not received surgery, chemotherapy, radiotherapy, local treatment or traditional Chinese medicine for tumors;
5. The subject voluntarily joined the study and signed an informed consent form voluntarily.

Exclusion Criteria:

1. Pancreatic tumors are evaluated as metastatic lesions, not primary tumors of the pancreas.

Patients diagnosed as tumor of pancreas will all be considered for enrollment.