Abstract: With the development of the grain for green project in north-west of china,the ecological environment have been effectively changed for better. Now,the new question which the farmers must be faced is how to improve the economic income. In order to solve the long-time development problem, The follow-up industry of post-grain for green project has to be develop. The article is studying about the current situation of the follow-up industrial development after conversion of cropland to forestland in north-west. It indicates the question of the slowly in follow-up industrial development and the question of people who are short of to the project. So, it should expound the advantage of the resource of north-west and depend on the knowledge to develop the ecological agriculture and ecological tour, extending the industrial chain to improve the income of farmer.