Phu Quoc Island, Vietnam's largest island, is celebrated for its stunning natural landscapes and rich cultural heritage. This study introduces an innovative approach to evaluating the factors contributing to Phu Quoc's tourism attraction by combining a modified gravitational model with ecological economic principles, Artificial Intelligence (AI), and Big Data analytics. By incorporating real-time data on biodiversity, carbon emissions, renewable energy usage, and tourist behavior, the study provides a comprehensive framework for promoting sustainable tourism on the island. The findings offer actionable insights and a strategic roadmap for enhancing Phu Quoc's appeal as a green and sustainable tourist destination, ensuring long-term economic and environmental benefits.