RESUMO
Ubiquitous library and ubiquitous service are the future trend of library.Described in this paper are thus the extended traditional service and multidimensional personal and deepened information service such as sub-ject service, academic conference information service, special subject navigation service, new foreign book transla-tion service, special subject information service, in order to let the readers use the library at any time and at any place and enjoy the library everywhere .
RESUMO
The practical experiences with subject service in Medical Library of Chinese PLA were summarized in terms of the establishment of user information records, accumulation and summation of information, and construc-tion of information platform. Suggestions were put forward for the improvement of subject service in Medical Library of Chinese PLA, such as holding the big information concept in the big data era, using the biomedical data as the target of study, providing various kinds of service, integrating seamless, dynamic and interactive library service into user service. The fact that focus on artificial intelligence, computer, information and coomunication technologies is one of the future directions was pointed out.