Revitalizing idle rural residential bases is essential for improving the utilization rate of residential resources, activating pastoral land resources assets, increasing farmers’ property income, and stimulating rural development vitality. Social capital is one of the essential social resources owned by farmers, which is closely related to rural social governance and farmers’ daily lives and plays an indispensable role in revitalizing residential land. Based on the theory of social capital and the survey data of 316 farm households in Shaanxi Province in 2022, this study first empirically analyzes the influencing factors of social capital and its constituent dimensions on farm households’ willingness to revitalize their home-steads using a Logit regression model, and then empirically analyzes the hierarchical structure relationship among the influencing factors using an ISM model. The results of the study show that: (1) Social capital and its three constituent dimensions of social network (“Contact with relatives, neighbors, and families” and “Contact with village committee staff”), social trust (“Trust in friends and relatives” and “Trust in village committee and other organizations”), and social participation (“Participation in meetings of village committees and other organizations”) have significant positive effects on farmers’ willingness to revitalize their residential land. (2) There are differences in the effects of different dimensions of social capital on farmers’ willingness to revitalize their homesteads: social trust as a deep-seated cause affects farmers’ social networks and social participation, which in turn affects farmers’ knowledge of homestead revitalization policies and ultimately farmers’ willingness to revitalize their homesteads. Based on the findings of the study, to improve farmers’ willingness to revitalize their homestead bases, government departments should base their efforts on the social capital characteristics of farmers, increase the cultivation of farmers’ social capital, and strengthen the publicity of the work of revitalizing homestead bases and related policies.

Under the dual structure of urban and rural lands, revitalizing rural idle homesteads is an effective measure for reducing resource waste and improving the efficiency of rural land use. Therefore, the intention of farmers, as the primary decision-makers in revitalizing rural idle homesteads, is the key to the success of revitalizing idle homesteads. With an analytical framework based on the theory of planned behavior (TPB), this study used multiple linear regressions to analyze the survey data (N = 680). The results showed that attitude toward the behavior (AB), subjective norms (SN), and perceived behavioral control (PBC) had significant positive effects on the farmers’ intention to revitalize, with SN, PBC, and AB in descending order of influence. It confirmed that the TPB applies to the study of farmers’ intention to revitalize idle homesteads in the context of China. In addition, this study focused on the social phenomenon of farmer differentiation, which is prominent in the urbanization process. It emphasizes the moderating effect of farmer differentiation on the relationships of “attitude toward the behavior–intention to revitalize,” “subjective norm–intention to revitalize,” and “perceived behavioral control–intention to revitalize,” and further improves TPB. The present empirical study using hierarchical regression found that the deeper the differentiation of farmers, the stronger the effective influence of AB, SN, and PBC on farmers’ intention to revitalize idle homesteads. Therefore, it is suggested that the Chinese government should enhance farmers’ intention to revitalize by cultivating a positive attitude toward the behavior, strengthening the positive influence of subjective norms on farmers, and enhancing farmers perceived behavioral control. Furthermore, it is more important to pay full attention to the phenomenon of farmer differentiation and design a revitalization policy according to the differences in sensitivity of different types of farmers to attitudes toward the behavior, subjective norms, and perceived behavioral control.

The revitalization of idle homesteads is an essential element in stimulating rural land resources and assets and promoting the integrated development of urban and rural areas. However, existing studies have paid less attention to the relationship between the differentiation of farm households and revitalization intention. Therefore, exploring the relationship between farmer differentiation and revitalization intention has become the key to improving the revitalization intention. The differentiation of farmers in the process of urbanization is an important factor affecting the intention of farmers to revitalize idle homesteads. This study defines “farmer differentiation” as a second-order factor and is based on the theoretical analysis framework of “farmer differentiation (FD)–farmer cognition (FC)–revitalization intention (RI)” to systematically reveal the relationship between FD and RI with a multi-dimensional perspective. At the same time, we analyze the mediating role of FC in the relationship between FD and RI. The data collected from 881 Shaanxi, China, farmers are analyzed through structural equation modeling (SEM). The results of the study show that (1) The dimensions of farmer differentiation (FD) are wealth capital differentiation (WCD) and reputation capital differentiation (RCD). (2) The formation of farmers’ intention to revitalize follows the logical relationship of “FC–RI” in the Extended Theory of Planned Behavior (ETPB), and subjective norms (SN) are the critical factor. (3) The logical relationship of “FD–FC–RI” in the ETPB has been confirmed. In addition to the direct positive effect of the WCD and RCD on farmers’ intention to revitalize idle homesteads, WCD will indirectly affect RI through the four sub-dimensions of behavioral attitudes (BA), subjective norms (SN), perceived behavioral control (PBC) and homestead dependence (HD) under the FC conception. Meanwhile, the chain mediating role of the WCD and FC sub-dimensions in the RCD effect on the intention to revitalize cannot be ignored. Therefore, to increase farmers’ intention to revitalize Idle homesteads, policymakers need to focus on increasing WCD and RCD and helping farmers establish proactive FC.

Against the intensifying mismatch between urban and rural land resources, activating farmers’ intentions to revitalize their idle homesteads is a key issue in optimizing land resource allocation and promoting urban–rural integrated development. However, existing studies mostly focus on the marginal effect of a single factor and ignore the synergistic effect of multiple factors, making it difficult to reveal the complex causal logic of farmers’ decision-making. This study aims to explain the causal asymmetry and equivalent path problem in farmers’ revitalized decision-making by capturing the multidimensional interaction mechanism of “external stimulus–mental cognition”. This study integrates the social stratification theory, the theory of planned behavior, and the Stimulus–Organism–Response framework to systematically explore how the interactive configuration of farmer differentiation and cognition from a multidimensional perspective drives the formation of farmers’ willingness to engage in high inventory activities, based on the 881 farmer research data in Shaanxi Province, using fuzzy-set qualitative comparative analysis (fsQCA) methodology. This study found that (1) a single condition cannot independently explain the intentions of farmers to revitalize, and its formation needs to rely on the synergistic linkage of multiple conditions; (2) the configuration of farmers’ high intentions to revitalize includes “wealth capital differentiation–dual cognitive-driven type”, “single cognitive-driven type”, “reputation capital differentiation–single cognitive-driven type”, “wealth capital differentiation–single cognitive-driven type”, which wealth capital differentiation is the common core condition triggering high intention; and (3) the formation of farmers’ low revitalization intentions stems from the insufficient differentiation of farmers and the lack of cognitive elements. Therefore, policymakers should take a holistic perspective in enhancing farmers’ revitalization intentions, focusing on the rational allocation between farmer differentiation and farmers’ cognition.