With the development of network technology, communication technology and computer technology, the library circle has raised the climax of building the digital library. In this paper, it is necessary to establish human-machine interactive library management information system based on information technology, computer technology, networking technology to combine information, management with system, and to make library function maximal, service optimal and management canonical. Speed up data entry is one of the core aspects, and rapid data input is the main function of the library management system. After discussing the principles and methods of data input, OPAC systems and bar code technology can satisfy the requirements. Data input and output: the library can easily achieve all business input and output data; data storage and transfer: The database structure is reasonable, rational distribution, and store a variety of data makes the library all business data secure storage and mobile, highly centralized data management and sharing.
