Inclusion Criteria:  Age>=18Y Good Organ Function Expected survival time ≥ 3 months Histologically confirmed, advanced/recurrent or metastatic nsqNSCLC Measurable lesion according RECISTv1.1 by investigator High EGFR expression H score ≥200 ECOG score 0-1  Exclusion Criteria:  Histologically, squamous NSCLC should be excluded. For tumors with adenocarcinoma and squamous carcinoma, if the adenoid component is dominant and the squamous component is < 5%, the patients meet the inclusion requirements. Previous treatment with EGFR inhibitors Symptomatic brain or meningeal metastases (unless the patient has been on > treatment for 3 months, has no evidence of progress on imaging within 4 weeks prior to initial administration, and tumor-related clinical symptoms are stable). Active clinical severe infection; A history of other malignancies within 5 years, except for cured carcinoma in situ of the cervix or basal cell carcinoma of the skin,etal.