Based on the published literatures and the specimen records, the ArcGIS software was used to analyze the spatial distribution pattern of rare or endangered plants and national key protected plants among prefectures and counties of Qinghai Province. The results of this study indicated the rare or endangered plants and national key protected plants were found in each prefecture throughout Qinghai Province. The species richness was the highest in Yushu Prefecture with 73 species, accounting for 50% of the total species; the lowest species richness was found in Haixi Prefecture with 26 species. As far as county distribution was concerned, the rare and endangered species was very different among counties. 57 species was identified in Yushu County, but Gande County had only 5 species, which would provide the theoretical basis for the protection and development utilization of rare or endangered plants and national key protected plants in Qinghai Province.%通过文献和标本记录分析得到青海省珍稀濒危保护植物的种数，并尽可能得到它们在青海省的具体分布地，结合ArcGIS的手段，进一步了解并核实这些珍稀濒危保护植物在青海省各州（市、县）的分布情况。结果表明，青海省珍稀濒危保护植物在全省各州（市）均有分布，物种丰富度最高的是玉树州，有73种，占总物种数的50％；物种丰富度最低的是海西州，有26种；珍稀濒危保护植物在全省各县的分布差异很大，其中玉树县有57种，而甘德县只有5种。本研究可为青海省珍稀濒危保护植物的保护研究和开发利用提供一定的理论依据。
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