COPD is a progressive and irreversible lung disease characterized by persistent airflow limitation, dyspnea, chronic cough, and impaired daily functioning, often accompanied by comorbidities that reduce quality of life. Despite its high prevalence in Taiwan, COPD remains underdiagnosed and undertreated. This study aims to evaluate a transtheoretical model-based digital multimedia nursing education intervention for elderly patients with COPD. The intervention is designed to enhance disease knowledge, promote self-care behaviors, and improve self-management abilities, ultimately supporting better quality of life and daily functioning in this population.