This study explores the role of air-purifying indoor plants in improving indoor air quality and promoting environmental sustainability. Indoor spaces often contain pollutants such as carbon dioxide (CO₂), benzene, formaldehyde, and volatile organic compounds (VOCs) emitted from furniture, paints, and cleaning products. The paper reviews scientific findings, including research by the National Aeronautics and Space Administration, which demonstrate that certain plants can absorb harmful pollutants through natural biological processes. Common indoor plants such as Snake Plant, Areca Palm, and Money Plant are examined for their environmental benefits. The study concludes that indoor plants provide a cost-effective, eco-friendly solution that supports sustainable living and enhances indoor environmental quality.