Nonvalvular atrial fibrillation is a common cardiac arrhythmia with significant thromboembolic and stroke risks. Effective treatment is crucial to reduce mortality and complications. Catheter ablation therapy is a widely used intervention, but it has limitations, including a high recurrence rate and unproven efficacy in reducing embolic risk. Left atrial appendage occlusion is an emerging minimally invasive intervention with the potential to prevent strokes and embolisms, reduce the need for anticoagulants, and enhance patient outcomes. This paper discusses the clinical significance and effectiveness of left atrial appendage occlusion as an interventional treatment for nonvalvular atrial fibrillation, highlighting its role in improving patient prognosis.