The Combination of Anlotinib and Immune Checkpoint Inhibitors for Advanced NSCLC Patients With Muti-line Therapy

Inclusion Criteria: * Signed Informed Consent Form * Ability to comply with protocol * Aged ≥ 18 years Histologically documented NSCLC that is currently locally advanced or metastatic NSCLC Disease progression during or following at least one line treatment. Measurable disease, as defined by RECIST v1.1 * ECOG performance status of 0 or 1 * Life expectancy ≥ 12 weeks * Adequate hematologic and end organ function, defined by the following laboratory results obtained within 14 days prior to the first study treatment: ANC ≥ 1.5 × 109/L (without granulocyte colony-stimulating factor support within 2 weeks of laboratory test used to determine eligibility) WBC counts \> 2.5 × 109/L and \< 15 × 109/L Lymphocyte count ≥ 0.5 × 109/L Serum albumin ≥ 2.5 g/dL Platelet count ≥ 100 × 109/L (without transfusion within 2 weeks of laboratory test used to determine eligibility) Hemoglobin ≥ 9.0 g/dL Patients may be transfused or receive erythropoietic treatment to meet this criterion. Liver function tests meeting one of the following criteria: AST or ALT ≤ 2.5 × upper limit of normal (ULN), with alkaline phosphatase ≤ 2.5 × ULN or AST and ALT ≤ 1.5 × ULN in conjunction with alkaline phosphatase \> 2.5 × ULN Serum bilirubin ≤ 1.5 × ULN Patients with known Gilbert's disease who have serum bilirubin level ≤ 3 × ULN may be enrolled. INR and aPTT ≤ 1.5 × ULN This applies only to patients who are not receiving therapeutic anticoagulation; patients receiving therapeutic anticoagulation should be on a stable dose for at least 1 week prior to randomization. Creatinine clearance ≥ 30 mL/min Cockcroft-Gault, Chronic Kidney Disease Epidemiology Collaboration, or Modification of Diet in Renal Disease formulas may be used for creatinine clearance calculation. Note that 24-hour urine collection is not required but is allowed. Exclusion Criteria: * Active or untreated CNS metastases as determined by computed tomography (CT) or magnetic resonance imaging (MRI) evaluation during screening and prior radiographic assessments Leptomeningeal disease • Uncontrolled pleural effusion, pericardial effusion, or ascites requiring recurrent drainage procedures Uncontrolled hypertension Perior used anti-angiogenic agents or immune checkpoint inhibitors.