The author of this paper chose the conflict solving principle in the TRIZ theory to apply in the research of sustainable utilization of water resources, and set up and defined such five general parameter units as water resource unit, ecological environment unit, economic unit, human resource management unit, and technological innovation unit to find the conflicts between those units and establish a conflict matrix. Taking the sustainable utilization of water resources in Ningtri, Tibet as an example, the author redefined the matrix elements according to 40 innovation principles in the TRIZ theory, and found a solution to the problems of sustainable utilization of water resources in Ningtri, Tibet.