Abstract: In order to know the use and service of mobile library, this paper took readers of East China Jiaotong University as the research object. Through questionnaire method from readers basic information, readers use mobile library, the mobile library service satisfaction of readers to carry on the random sampling investigation.The results showed that there was a lack of publicity, no free internet environment, lack of academic resources, insufficient resources update degree and search setting imperfect in East China Jiaotong University mobile library services.Therefore,we need to strengthen the training of propaganda, to accelerate the construction of the campus free wireless network, to make full use of Changbei Academic Library Alliance and to improve the function of mobile library to a targeted manner to solve the problem.