Abstract: Based on the analysis of the primary situation of water resources in China and the connotation of watersaving agriculture, the highyielding and highefficiency technical system of mechanized watersaving agriculture was put forward. The system aims at highyielding,highefficiency and watersaving,with mechanization as its approach. It consists of four subsystems， i．e．， the technology of watersaving cultivation,the technology of watersaving irrigation,the technology of watersaving machinery and equipment and the technology of watersaving management, The subsystem of watersaving cultivation technology is the basic main subsystem and the subsystem of watersaving irrigation technology is the key technology subsystem, with the watersaving machinery and equipment technology subsystem being the approach, the tool and the carrier, and the subsystem of watersaving management is the control center． These four subsystems should be operated coordinately so as to realize the objectives of highyielding, highefficiency and water saving. The interration between the four subsystems was shown by a figure. On the basis of the separate discussions of the four subsystems,a structure illustrution are given． A train of thoughts and a framework are provided for the development of watersaving agriculture everywhere. That is a wholeness of interration and intercoordination and the actual effect of highyielding, highefficiency and watersaving will not be achieved unless suitable technologies are chosen accordinary to the concrete conditions of different areas.