中文摘要：

利用百度指数中的地区分布模块,统计各地级以上城市的网络用户搜索关注的前10位城市。城市排名越靠前以及在前10位中出现频次越高,则可视为被其他城市搜索关注的程度更高,在互联网下的城市等级越高。基于此,通过对286个地级以上城市的网络用户搜索关注的前10位城市的分析,发现：1互联网下城市的网络被搜索关注程度差距明显,存在等级差异;2互联网下的城市等级体系空间布局呈现出空间集聚特征以及区域板块差异;3经济、地理因素影响着网络用户在互联网上对城市的搜索关注,网络用户倾向于搜索关注经济发展水平更高的城市与地理空间距离更近的城市。

英文摘要：

It becomes increasingly common for internet users to get information related to cities via internet search.Therefore, internet search could be regarded as information flows gathered from numerous internet users. Using the area distribution model in baidu index, top ten cities that been searched most by internet users in each 286（prefectural and above prefectural） cities in China are recorded. The city with a higher rank and higher frequency is more searched by users in other cities and, thereby more important in the city hierarchy under internet. Our findings show（1）（1）significant differences among cities based on internet search;（2） significant spatial concentration and regional differences of China＇s city hierarchy under the internet;（3） economic and geographical factors do affect internet users＇ search activity of other cities.