2. According to the Guidelines for the Diagnosis and Treatment of Primary Lung Cancer (2022 edition), the patient was diagnosed with NSCLC by imaging and histopathology;
3. TNM stages were III-IV;
4. Newly diagnosed, first-line treatment failure, refusal or inability to perform conventional treatment (surgery, chemoradiotherapy);
5. ECOG PS ≤2;
6. Expected survival \> 3 months;
7. Sign the informed consent voluntarily, and the compliance is good.
