中文摘要：

大学和城市是相伴共生的有机体。文章以2014年全国GDP排名前200的城市为样本,采用结构方程模型验证城市的大学水平与城市创新能力的相关性。然后,以北京为例,采用协整检验（格兰杰因果检验）验证北京市所有大学与北京市区域创新能力的相关性。实证发现：大学生和大学教师的数量以及大学质量对区域创新能力有显著促进作用,大学生数量是引起北京经济增长的格兰杰原因。

英文摘要：

Universities and cities are symbiotic organisms .This paper takes the first 200 cities in the 2014 national GDP ranking （including 2017 universities） as samples, and uses structural equation model to verify the correlation between cities＇university standard and innovation ability .It then takes Beijing as an example and uses the co-integration test （ Granger causality test ） to study the correlation between universities in Beijing and Beijing＇s regional innovation ability .It is found that the numbers of uni-versity students and lecturers , and the quality of universities have a significant effect on the regional innovation ability , and the number of university students is the Granger cause of Beijing＇s economic growth .