Inclusion Criteria:  Age 18-75 years old (≥18 years old, ≤75 years old), no gender limit; The subject voluntarily participates in the study, and he or his legal guardian signs the "Informed Consent"; Unresectable, locally advanced recurrence or metastatic pancreatic cancer diagnosed by histopathological examination; according to the American Joint Committee on Cancer (AJCC) TNM staging system (2017 version 8), diagnosed as stage III or IV pancreatic cancer ； According to the RECIST 1.1 standard, there are clear measurable and evaluable lesions; The tumor tissue was confirmed by immunohistochemical staining, and CD276 expression was positive; The subject must have received first-line treatment; The subject must be unsuitable for radical treatment, such as radical chemotherapy and/or surgery/immune checkpoint inhibitors, or refuse surgical resection Within 2 weeks before cell therapy, have not received antibody drug treatment; The ECOG score is 0-2 points; The subject has no contraindications for peripheral blood apheresis; The expected survival time is more than 3 months  Exclusion Criteria:  Those who have a history of allergies to any of the ingredients in cell products; Routine blood examinations have the following conditions: WBC≦1×109/L, absolute centrioles ANC≦0.5×109/L, absolute lymphocyte value ALC≦0.5×109/L, PLT≦25×109/L; The following conditions in laboratory tests include, but are not limited to, serum total bilirubin ≥ 1.5 mg/dl; serum ALT or AST greater than 2.5 times the upper limit of normal; blood creatinine ≥ 2.0 mg/dl; According to the New York Heart Association (NYHA) cardiac function classification standards, patients with grade III or IV cardiac insufficiency; or echocardiographic examination of left ventricular ejection fraction (LVEF) <50%; Abnormal lung function, blood oxygen saturation in indoor air <92%; Myocardial infarction, cardiovascular angioplasty or stenting, unstable angina pectoris, or other serious clinical heart diseases within 12 months before enrollment; High blood pressure level 3 and poor blood pressure control with medication; Previously suffering from head injury, disturbance of consciousness, epilepsy, more serious cerebral ischemia or cerebral hemorrhage disease; Patients with autoimmune diseases, immunodeficiencies, or other patients who need immunosuppressive therapy; There is an uncontrolled active infection; Have used any CAR-T cell products or other genetically modified T cell therapies before; Live vaccination within 4 weeks before enrollment; HIV, HBV, HCV and TPPA/RPR infected persons, and HBV carriers; The subject has a history of alcoholism, drug abuse or mental illness; The subject has participated in any other clinical research within 3 months before joining this clinical research; Female subjects who have any of the following conditions: a) are pregnant/lactating; or b) have a pregnancy plan during the trial period; or c) have fertility and cannot take effective contraceptive measures; The researcher believes that the subject has other conditions that are not suitable for participating in this research