Because of the biological characteristics of pancreatic cancer, some patients with pancreatic cancer have already developed implantation metastases on the peritoneal surface of the abdominal cavity and liver surface before the tumor invades the surrounding important organs and large blood vessels, and the imaging examination usually cannot detect the implantation metastases in the abdominal cavity. In contrast, if these patients undergo laparoscopic laparoscopic exploration during open surgery, abandoning blind open exploration because of the discovery of abdominal metastases will avoid unnecessary pain and medical expenses. According to domestic and foreign literature, about 10-20% of pancreatic cancer patients will have implantation metastases on the peritoneal and hepatic surfaces of the abdominal cavity. Therefore, laparoscopic exploration can detect these metastatic lesions in the abdominal cavity, i.e., biopsy can be taken to clarify the diagnosis, and unnecessary open exploratory surgery can be avoided. The laparoscopic laparotomy is simple and effective: it requires only a small 10 mm incision in the umbilicus, the placement of a 10 mm Trocar after the creation of a pneumoperitoneum, and the placement of a laparoscopic lens in the abdominal cavity for examination, as well as lavage of the abdominal cavity for tumor cytology.