Taking Lugu Lake in Yunnan Province as research area,based on Landsat 8 OLI multispectral imagery, we respectively used the normalized difference water index(NDWI),modified NDWI,tasseled cap transformation and object-oriented imagery classification to comparatively study the water body information extraction. The results showed that for special band of Landsat 8 imagery,the effect of water body information extracted by object-oriented image classification is the best,which have an obvious advantage compared with the traditional method.%运用Landsat 8卫星OLI多光谱影像数据，以云南泸沽湖为研究区域，分别运用归一化差异水体指数法、增强型水体指数法、缨帽变换以及面向对象图像分类进行泸沽湖水体信息提取的研究与比较。研究结果表明针对Landsat 8遥感影像波段的特殊性，采用面向对象图像分类提取出的水体信息效果最好，该方法相比传统水体信息提取具有显著的优势。
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