Abstract: The precision agriculture technological system has been developed into three branches, precision farming, precision raising and precision processing. They should be developed first from DSS(Decision Support System) and achievements obtained in scientific research, and then they can be used in practice step by step. Then stretch to the two ends of precision farming system. Finally,to complete the integration of GPS、GIS and RSS and the realization of intelligent control farm machine system(ICS)until finish up all system.According to the foreign experience, the development of greenhouse precision farming and feeding may as well earlier on field precision farming.Because,“easy first hard second”it can get twice the result with half of the efforts(table 3).