This study is a single-arm prospective single-center phase II study. Subjects are untreated resectable II-IIIIA or potentially resectable T3-4N2 stage IIIB NSCLC. 70 subjects will be enrolled in this prospective observation aimed at evaluating the clinical efficacy and safety of D-BACE in combination with neoadjuvant chemotherapy and carelizumab in patients with resectable II-IIIIA or potentially resectable T3-4N2 stage IIIB NSCLC. The treatment group regimen will be 3 cycles of D-BACE (DCB-loaded microspheres loaded with epirubicin 50 mg) in combination with chemotherapy and carelizumab (the specific regimen of chemotherapy will be determined by the investigator, and platinum-containing two-agent chemotherapy will generally be used). Adverse events will be monitored throughout the trial and graded for severity according to NCI CTCAE version 5.0. Tissue and blood specimens will be dynamically collected during the course of treatment for translational research.