Abstract: The integration of the three major industries serves as a critical mechanism for stimulating endogenous rural vitality and represents a significant pathway toward rural revitalization and high-quality economic development in agricultural regions. The scientific evaluation of integration effectiveness remains an essential component in developing new agricultural reform initiatives. Based on panel data from Yuanjia Village, Yanxia Town, Liquan County, Xianyang City, Shaanxi Province spanning 2007-2022, this study employs the Entropy Weight-TOPSIS method to dynamically analyze integration patterns, developmental phases, and core driving factors from a temporal dimension. Results indicate: 1) The industrial integration in Yuanjia Village demonstrates a significant upward trajectory, progressing through three distinct phases-introduction, growth, and maturity-with substantial variations in core driving forces across these stages. Agricultural multifunctionality emerges as the primary catalyst for integration, while agricultural value chain extension and farmers’ income enhancement serve supportive and stimulative functions at different developmental stages. 2) Rural industrial integration requires optimized integration pathways corresponding to specific developmental phases, emphasizing agricultural multifunctionality development, value chain extension, and diversified collaborative models. Furthermore, the study highlights the importance of coordinated development across all indicators, advocating for technological innovation and resource integration to enhance integration quality, thereby providing a replicable theoretical framework and practical methodology for the integration of primary, secondary, and tertiary industries in rural contexts.