Analyzing the interactions between environmental or agricultural policies and farmers' behaviors has been widely considered to be very important for the sustainability of agro-ecosystems. Based on the economics theory, the goal-project-risk-decision(GPRD) model was constructed, and the process and change of the land use decision-making by farm household were revealed. With the help of hierarchical linear model(HLM) software, the farm households' landuse behaviors were analyzed. The conclusion is as follows: (1) The off-farm was widespread due to the lower comparative advantage of agriculture, and the majority crops were potato, corn and fruit tree. (2) The decision-making for cash crops was affected by the characters of farm household and the distance between parcels and roads, and for cereal crops, by the natural conditions.