Through data statistics and field research, the macro impact of national policies on village reconstruction is revealed. It is pointed out that the policy of homestead, the way of production and life, and the family structure are the important influencing factors of the new courtyard form, and the population increase and decrease, the separation of families, and the circulation are the driving forces for the continuous reconstruction of the existing courtyard. It is pointed out that rural housing is the result of farmers' interpretation of objective policies and environment, the realization of psychology and concepts, the selection and adaptation of construction content and conditions, and the constant adjustment in the use cycle. At present, the rural housing in western Henan is undergoing the reconstruction of space "from simple to complex", roof "from flat to sloping", and image "from foreign style to Chinese style". It also points out that the essence of "hollowing out" is the result of "deconstruction" of traditional social structure.