Hengyang Basin which was a typical hilly area in subtropical zone acted as the research subject. The necessity and feasibility for the rainfall resource utilization in Hengyang Basin were analyzed. And the tentative plan of rainfall resource utilization were put forward: First, strengthening the rainfall resource utilization on the spot to set up the eco-barrier for the development of economy and social; second, actively popularizing the rainfall harvest reserved in the courtyard to develop the courtyard eeonomy; third, properly developing the...