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在对渭河及其支流的水质现状进行评价的基础上，采用肯德尔法和内梅罗指数法对其１９８６年～１９９５年的水质趋势进行了分析。结果表明，渭河及其支流的水质正在进一步恶化，最后阐述了其形成的主要原因和存在的问题，并指出保护水资源和控制水污染是今后工作中的一项重要任务。
Based on the evaluation of the water quality in Weihe River and its tributaries, the water quality trends of 1986-1995 were analyzed by Kendall and Nemerow indices. The results show that the water quality of the Weihe River and its tributaries is deteriorating. At last, the main causes and existing problems of the Weihe River and its tributaries are expounded. It is pointed out that the protection of water resources and the control of water pollution are an important task in the future.