The progress of researching on “Smart city” keeps a rising trend globaly, before it happened an outbreak of growth in 2013, which is stil in the growth stage nowadays. China has occupied an overwhelming superiority on the scientific research capacity in the world, with a high proportion of published papers of 45.48%. Further more, it shows a high level of scientific research strength of China’s research institutions, among which, the Chinese Academy of Sciences is in the leading position. The hot key words related: Inteligent City、Smart grid、Internet of things、Cloud computing、Ecological city、Digital City、Low-carbon city, etc. From the point of view of patent agencies, CISCO technology company and Samsung Electronics Co Ltd has the largest number of patents.%全球智慧城市研究水平保持着逐渐上升的趋势，2013年出现爆发增长态势，目前仍处于成长期。中国研究实力在全球占据绝对优势，发文量占比高达45.48%。其中，中国研究机构的科研实力突出，中国科学院处于领跑地位。智慧城市研究相关热点关键词有：智能城市、智能电网、物联网、云计算、生态城市、数字城市、低碳城市等。从专利产出机构来看，专利族数量最多的机构是美国思科技术公司与韩国三星电子有限公司。
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