The goal of this clinical trial is to elucidate the clinical efficacy and safety of electroacupuncture combined with PD-1 inhibitor therapy in elderly patients with advanced non-small cell lung cancer (NSCLC) through a multicenter, randomized controlled clinical trial. The main question it aims to answer is: the combination of electroacupuncture and PD-1 inhibitor therapy has demonstrated significant improvements in both clinical efficacy and safety profiles among elderly patients with advanced NSCLC. Researchers will compare a sham electroacupuncture group combined with PD-1 inhibitor therapy (serving as the control group) to see if the intervention group exhibits superior therapeutic efficacy and safety outcomes. Participants will be randomly assigned to one of two groups: an electroacupuncture combined with an immune checkpoint inhibitor group, or a sham electroacupuncture combined with an immune checkpoint inhibitor group. The immune checkpoint inhibitor will be administered on a 21-day cycle, with a total of 4 to 6 treatment cycles, followed by the option for maintenance therapy. Electroacupuncture treatment will commence on the same day as the initiation of the immune checkpoint inhibitor cycle, administered once daily for a total of five sessions per cycle, with 4 to 6 cycles in total. The primary outcome measure is progression-free survival (PFS). Secondary outcomes include objective response rate (ORR), quality of life, immune function, traditional Chinese medicine syndrome scores for lung cancer, and safety parameters. This study aims to establish the efficacy and safety of electroacupuncture combined with PD-1 inhibitors in elderly patients with advanced NSCLC. Additionally, peripheral non-coding RNA will be collected at baseline to analyze differentially expressed genes, thereby identifying molecular predictive biomarkers for patients who may benefit most from this combined treatment approach.