Abstract: The Jialing River in central Sichuan is the largest tributary river in the upper reaches of the Yangtze River,and thus specially important in the prevention and control of flood disasters along the Yangtze River.In terms of the distribution of water resources,engineering geology and environmental engineering geology of the Sichuan Basin and its margins,the authors have proposed that it is crucial to the efforts to built more water conservancy projects such as dams and reservoirs in the upper reaches of the Jialing River(especially the Fujiang and Qujiang Rivers)so as to impound the flow of floodwater.In doing so,the droughts and inundations will certainly be reduced,and even eliminated not only in central Sichuan but also in the areas along the middle and lower reaches of the Yangtze River.For this reason,an overall plan should also be worked out for the construction of the water conservancy projects along the Fujiang and Qujiang rivers.