Abstract: The focus of this study was on the shortage of water resource and aneven distribution of precipitation on time and space caused by the climatic charater of HeiLong Gang region that suggest the theory of four-dimension governing water system. After the prospecting the regularity of four water inversion system, authors discovered that the plant expended water and the four water precipitation, ground surface water, subsoil water, soil water system - have certain relationship as an organic whole.According to the ecology system of water conservancy with the regulation of crossing time and space, to mitigate the shortage of water resource were also effectively disscussed in the paper.