Based on a field sampling survey data of rural households in the Aba Tibetan and Qiang Autonomous Prefecture of Sichuan Province, this paper explored how preferences for rural industry development and its sectoral subdivisions affect rural labor migration desires and behaviors and how to enhance rural endogenous dynamics to facilitate contented settlement of rural labor by the Probit model and multiple mediation models. Results indicate: 1) Rural industrial development in mountainous areas effectively attracts rural labors, with the influence of industries ranging from strongest to weakest as tertiary, secondary, and primary sectors, respectively; 2) Mechanistically, under rural industrial development, whether infrastructure is well-developed forms the foundational factor affecting rural labor migration desires and behaviors in mountainous regions, yet relative benefits are the decisive factors; and 3) From the perspective of sectoral subdivision, mountainous areas preferentially develop industries such as distinctive cultivation and breeding, agricultural product processing, and rural tourism, based on regional characteristics, which exert a stronger pull on rural labors. Therefore, this paper recommends enhancing infrastructure development in mountainous areas, strengthening support for region-specific industries, and formulating differentiated policies for industry development and labor migration.