Abstract: Based upon analyzing and comparing the ideas of the precision-farming in western countries and the ideas of the intensive cultivation and the agricultural eco-engineering in China over last ten years, this paper affirms that the research and practice of agricultural eco-engineering in China possess no substitutional and special effect. And it claims that R & D of the Technical Support System(TSS) of 4S should be conducted in one body at first, to realiz the ideas of intensive cultivation in China and to absorb the ideas and the techniques of the precision-farming in western countries, and to develop the precision-agriculture of Chinese characteristics. And the basic frame of the technical support system of 4S in one body was put forward, and the thought way was pointed out that our country should group up correlative technique step-by-step according to the technical support system structure of 4S in one body and combine special instance of every terra, to develop the precision-agriculture from the precision-farming and the precision-raising. Meanwhile, the development of the precision-farming must standardize itself with the correlative standard of Digital Earth.