Collecting books is an important subject in library science research,especially collecting documents should play a more important role.

In this article,the author makes a probe into an identical content recorded commonly by the Mongolian document the origin of Mongol and Tibetan documents such as the history of the religious origins and so on.

The publication of Tibetan documents started long in Beijing, and the collection of them under different catalogues is in great number.

Development program of library collection is the guide of library collection construction.

“To get rid of the stale”and“take in the fresh”of documents have a com- mon task to undertake,that is,constructing,organizing,developing the system of the library collections,and regulating,controlling,reforming,perfecting the structure of the library col- lections,and making it more rational.

This paper analyzes the evaluation necessity of Vocational college Library collections through anal-yzing the two major outstanding features of Vocational college Library collections.

This paper introduces the characteristics of library s literature demand structure, analyzes on the practical significance of researching on the literature demand structure, and probes into the methods and measures for the adjustment of the collected literature structure.

This paper probes into the targets of the digitalization of collected literature,the copyright protection and the methods for the copyright protection in university library,and puts forward several suggestions on the construction of the library law.