This paper surveys the present condition of virtual reference of academic libraries in henan province,It points out its existing problems and analyses the reasons.

Hubei Digital Library(HBDLIB) is the information resources co-construction and sharing system led,invested and constructed by the Hubei Province Education Department.

Through the investigation on network information resources in university libraries in Guizhou,the paper has revealed the existing problems and disadvantages of network information resources owned by university libraries in Guizhou,and put forward corresponding suggestions.

Theory and practice in joint construction and sharing of the online foreign resources among the academic libraries in Yunnan Province;