Infrastructure is an important material foundation to enhance productivity,improve social situation and promote the development of urban modernization. With the eight indicators of National 31 provinces and autonomous of infrastructure investment from 2009 to 2013,the article constructs an evaluation model of factor analysis which obtains the scores and the ranking of infrastructure and classifies the level of infrastructure by cluster analysis. The study shows that the presence of provinces and cities infrastructure investment level exists regional differences, and in various regions infrastructure investment category also exists imbalance. Through overall comparison,the level is rather higher in the developed provinces such as the cast and eastern coastal areas especially in Shanghai,Tianjin,Beijing and so on. While it comparatively less drops behind in the central and western areas such as the Inner Mongolia,Tibet,Xinjiang,Qinghai and so on. From the types of infrastructure,the service class level of infrastructure investment is low,and nearly 65% of the country can not meet the general levels in investment.%基础设施是提升生产力、改善社会面貌、促进城市现代化发展的重要物质基础。文章以全国31个省（市、自治区）2009—2013年间的8个统计指标数据为对象，建立了因子分析评价模型，分析了各省市基础设施建设水平的综合排名；采用聚类分析对31个省市基础设施投资水平进行了归类。结果表明：全国各省市基础设施投资水平存在明显的地区差异，各地区在基础设施类别的投资上也存在不均衡性；从总体投资情况来看，东部及其沿海地区等经济较为发达的省份尤其是上海、天津、北京等地区基础设施投资水平较高，而内蒙古、西藏、新疆、青海等中西部地区基础设施投资水平比较落后；从基础设施类型来看，服务类基础设施投资水平较低，近65％的地区存在投资不足的问题。
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