It discusses the relationship between knowledge service and traditional service in public library,subject librarian and traditional consultant librarian,the major features and working model of knowledge service and how to practise knowledge service in public library.

Reference Librarians Will be the Leading Person in the Future Information Angel;

This paper discusses the reference service and reference librarian under the network environment, and analyzes the qualities that the reference librarian should possess from six aspects of the professional quality, physical-psychological quality, cultural quality, subject quality, innovation quality and communication quality.

This paper discusses the content of each stage of the reference service and requirement on reference consulting librarians.

Elaborated the characteristic,the content,the service way of the specialized library reference consultation in the network and the ability which the personnel should have.

The paper analyzes the background,characteristics and meanings of E-journal,discusses the new changes about reference consultation with the appearing of E-journal,and points out several countermeasures which deepen reference services of hybrid periodicals.

The paper discusses the present trend of the digital libraries with Internet/intranet access to reference consultation.

Coionization of the reference service of a library in the network environment;

The Quality Control and Appraisal of the Reference Service;

The Digital Reference Service in Library 2.0 Age;