The logical starting point of documentary resource theory is to make the library collection a kind of social resources and to place the library motion in a broader social background in order to make an investigation of it.The significance of this in not only providing a new theoretical basis for library collection development but also opening a new train of thought and frame of thinking for a inregrated library research which is more important.As a result of this,both the attentiong paid to other branches of learning can be initiated and the scientific payoffs and the scientific research methods of the resource matters of other branches of learning can be absorbed and used for reference.Also,both the connection between library science and other branches of learning can be broadened and the research train of thought can be opened up and developed.ref.8