In order to explore the formation paths of farmers' non-migration intention in high-risk areas of natural disasters and formulate more effective resettlement policies, five indicators across three dimensions—behavioral attitudes, subjective norms and perceived behavioral control—were extracted as antecedent conditions based on the theory of planned behavior. Using questionnaire survey data from 155 farmers in former Caopo township, Sichuan province, a fsQCA was employed to investigate the determinants for farmers' non-migration intention. The results show that household income, agricultural dependence, risk perception, policy satisfaction and subjective norms cannot individually constitute the necessary conditions for non-migration intention. There are three main paths leading to high non-migration intention. The first is "risk indifference", characterized by low risk perception and weak subjective norms. The second is "livelihood constraint", characterized by high agricultural dependence, low household income, and weak subjective norms. The third is "economically secure but unwilling", characterized by high household income, low policy satisfaction, and weak subjective norms.