In view of the present problem that the cooling system of three-way valve leakage, The innovation of TRIZ is applied to principle analysis and causal analysis that just to find technical conflict system and we can mining its structure and resources to solute the problem of leakage of the three-way valve according to the creative invention in principle contradiction matrix. In the process of the problem solving, the process and method of TRIZ is explored.%针对目前水冷系统三通阀泄漏的问题，应用创新方法TRIZ对其系统进行原理分析和因果分析，找到系统存在的技术冲突矛盾，对系统自身的资源、结构进行挖掘，最后依据矛盾矩阵对应的发明原理提出了针对三通阀泄漏问题的解决方案。在问题解决的过程中，探索使用TRIZ方法解决创新问题的途径。
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