With the continuous growth of the global population, food security has emerged as a critical issue of international concern. Accordingly, this study focuses on the key factor of cultivated land fragmentation, systematically uncovering the underlying mechanisms through which such fragmentation drives the shift away from food crop cultivation. The findings provide a valuable basis for countries worldwide to improve the current state of cultivated land fragmentation. This study utilizes microdata from the national rural fixed observation points (2009-2017) and employs a two-way fixed effects mode...