Abstract: A prominent hypothesis to explain the durability of authoritarian regimes focuses on the official adoption of law and legal institutions. The present study offers a novel empirical approach to test the relationship between legal construction and regime legitimation, drawing on a quasi-experiment and original panel survey in rural China. Using difference-in-difference, subgroup, and two-stage least squares analyses, it finds that the Chinese state’s project of legal construction powerfully shapes the legal consciousness of ordinary rural citizens and that state-constructed legal consciousness enhances regime legitimacy. The study also presents qualitative evidence to identify the causal mechanism linking state-constructed legal consciousness and regime legitimacy: the expansion of local institutions like state-run legal aid centers in rural communities. The study contributes to the institutional focus in debates about authoritarian durability by providing evidence at the intersection of state and society.