Geographical information is a kind of special information, with the characteristics of regional, multidimensional and dynamic. Understanding of certain phenomena could be more intuitive and specific with the effective analysis and using of geographic information. It also can bring convenience to human's production and life, and provide decision supporting. Fuzhou University City is chosen as the study area while college students in it are selected as target population in this paper. Geographic information of the region is obtained and adopted for the service platform's designing with the aim to improve the quality of college students' life, extending diversity and integration of the social ways (contact social type and non-contact social type), enhancing the communication between universities and college students. Before the development of the platform, the related information of the university students in Fuzhou University City was investigated through the electronic questionnaire, and the results were analyzed. Finally, the functions were determined, outdoor navigation, indoor navigation, online social, offline social, memory trace, paths' automatically update, paths' recommendation, "the past events reappear" and some other functions can be provided. During the development process, some involving technologies are studied and experiments are carried out.