Abstract: The most important problem in digital library construction and management is the conflict between copyright protection and society public profit advancement.By building the value system of profit balance, we should protect the profit of copyright writers effectively to achieve the value goal of society public profit and realize their good balance and exchange. This article analyses copyright problems in digital library construction and management,clears the relation of fight and duty and proposes the exact plans about the reasonable use and protection of digital library copyright.

Key words: Digital Library,Profit Protection,Conflict Balance,Use Protection