Inclusion Criteria:  Histologically confirmed diagnosis of previously untreated, Recurrent or Metastatic Squamous Non-Small Cell Lung Cancer EGFR immunohistochemistry (IHC) H score ≥200 assessed by central lab Has measurable disease as defined by RECIST 1.1 as determined by the IRRC Has a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) Performance Scale Has a life expectancy of greater than 12 weeks Has adequate organ function  Exclusion Criteria:  Histologically non-squamous NSCLC must be exclused. For non-small-cell histology, if has squamous components be allowed Has history of such as PD-1/PD-L1、EGFR、 CTLA4 targeted therapy EGFR sensitivity mutation or ALK or ROS1 gene rearrangement need to be excluded Has had other active malignancies within 5 years or at the same time Has uncontrolled pleural effusion、pericardial effusion or ascites