With the rapid development of information communication technology ICT), the smart phones are developed and the mobile phone's functions are constantly more powerful. The author discusses that as one of the main source of big data, the LBS data of the smart phone is conducive to study Chinese cities. Many foreign scholars have already used this application for urban study and tried to apply their mobile software to urban governance. Related researches are not so many in China, however, though it has the most smart phone users in the world. The author tries to review the previous researches about applying these data to urban study. There are three parts in this paper. Firstly, the author summarizes the significance of these data. The second part explains the research method and emphasis. The features of these data and the application methods of previous researches are discussed. There are three main differences between smart phone and non-smart phone, which will contribute more to the study. By consideration with the data features as well as the research fields of smart city, the author introduces the applications of smart phone LBS data in urban study from the four aspects:the behavior of urban residents, urban spatial structure, urban ecological environment and urban governance and make some comments for the previous researches. At the end of this paper, the author discusses the prospect of the application of smart phone LBS data and underlines the application to planning practice. Therefore, it is necessary to promote the cross and integration of related disciplines such as sociology, economic geography, cultural geography, computer science, mathematics and geographic information science, in order to make full use of the smart phone LBS data in urban study.