本文从结构理论的视角切入,剖析乡风民俗的结构构成,着力对乡风民俗的变迁动力机制进行理想类型分析,得出的结论是:结构要素的断裂、变异与植入,外来文化的冲击,民族地区农村社会结构的变迁,国家政府与社会力量干预,乡民的适应性、反思性实践是乡风民俗变迁的动力因素。 Based on the structural theory, this paper analyzes the structure of the folk custom and focuses on the ideal type analysis of the dynamic mechanism of the change of folk customs. The conclusion is: the fracture, mutation and implantation of structural elements, the impact of foreign culture , The changes of rural social structure in ethnic areas, the interference of state governments and social forces, the adaptability of villagers and the practice of reflectiveness are the motivating factors for the changes of folk customs in rural areas.