China's fast-paced urbanization has contributed to a significant decrease in rural populations, leading to the phenomenon known as village “hollowing.” In response, this study develops an integrated approach that combines the concepts of urban catalyst mechanisms with principles from sustainable tourism to promote rural renewal, while safeguarding both environmental and cultural assets. Urban catalyst theory is particularly effective in such contexts, as it emphasizes minimal intervention strategies capable of producing broad, transformative effects without dismantling existing spatial layouts or community networks. Taking Dongtai Village in Beijing as the focal point, the research explores how targeted actions—such as conserving vernacular architecture, enhancing communal gathering areas, and establishing multifunctional tourism infrastructure—can stimulate long-term development momentum. The findings show that post-renovation, the average courtyard usage rate has improved significantly, with an approximate increase of 30%.