UPN Veteran Yogyakarta central library is already implementing information systems in libraries or short bias CYPRUS. However, the library information system only to simplify the process of borrowing and book search and have not been able to display books directly. Under the system, students or faculty who want to read the book should make the process of borrowing books or come directly to the library, so in terms of the efficiency of the service time of course it is less effective. In order for the service to library users more effective, it is necessary to Digital Library system that can accommodate the user needs to access a collection of books online. Construction of the Digital Library created first in small scale is devoted to the Faculty of Industrial Technology UPN Veteran Yogyakarta. Digital library is built using web-based programming with PHP + AJAX programming language and MySQL database. As for the appearance of the book pieces will be displayed in the form of animated Flash Slideshow. System analysis method of making this application is the Data Flow Diagram (DFD) to describe the flow of data and Entity Relationship Diagram (ERD) as a depiction of the relationships between the entities table. Keyword : Digital Library, PHP, Ajax, MySQL Database, Flash Slideshow