中文摘要：

拉萨河是雅鲁藏布江的主要支流之一，是拉萨河流域广大居民最主要的生产和生活用水的水源。对于拉萨河流域经济社会的发展具有十分重要的作用，拉萨河流域水质质量的好坏直接影响着流域几十万居民的生产、生活质量和安全。但是，随着拉萨河流域采矿、选矿等矿产业的快速发展，在带来巨大经济利益的同时，它们排放的废弃物直接或者间接地影响着拉萨河流域生态环境质量，应该引起大家的高度重视。文章通过对拉萨河流域选矿厂的分布情况以及河段水质指标的调查研究，发现目前为止拉萨河流域水质没有受到污染，但是随着流域经济社会的进一步发展，不可避免地会对拉萨河流域水体产生污染。

英文摘要：

Lhasa River is one of major tributaryies of the Yarlung Zangbo, and it is the important resource of drinking and production water for people who are living in Lhasa River Valley. The water quality of Lhasa River closely relate to the quality of life of 700 thousands people living in this regions. However, with interests of the mineral industrial development could cause the environmental pollution in Lhasa River Valley in long running of the mineral industrial development. The content of some heavy metals in Lhasa River was studied. The result shows that the water of Lhasa River is not marked pollution at oresent.