Based on questionnaire and farm household interview survey, the article investigates about farmer's production and lives and land use change, discusses problems in the process of policy implementation and provides experience for continuing to implement eco-immigration policy. This investigation helps to understand the effects of eco-immigration policy. The results show that: (1) the will of farm households'eco-immigration is relative to the age of the householders and family's size, but not to the householders'educational attainments. (2) The main pocketbook of farm households has been changed after migration. The number of farmers engaged in stockbreeding reduces slightly, and the number of farmers engaged in tourism reduces greatly. (3) Because of the difference in cultivated land quality, cropping is changed from corn to wheat. (4) The way of livestock breeding has been changed. Scattering rate is declined greatly, captive period is expanded, and grass overloading is improved notably. On the whole, the environment in Sangong River Basin has been improved notably after eco-immigration, but management system and policies have not been carried out well, so the farm households'income level is not stable and immigrant attitude is not actively enough. In the future, the government should implement proper policies and provide support to promote migration positivity of farm households.