(Abstract Work automation, English OfficeAutomation, referred to as OA, is the automation of work information management. It uses leading technology to make people's various work and business flows gradually realized by various equipment and various man-machine information systems to achieve full use. information, improve work efficiency and work quality, and improve productivity. The developed work automation system, based on the company's own internal management and business development needs, uses computer technology and Internet technology to realize enterprise work automation and management informatization. This system selects the system development method which is linked with structuring and prototype method. The comprehensive system is divided into the overall design of the system and the user authentication module used for user login and registration, the employee information management module used by the system administrator to manage employee information, and used for the logged-in user to manage their own address book. The own address book module is used as the schedule module for the logged-in user to manage his own schedule, as the work log module for the logged-in user to manage his own work log, and as the communication between each user of the system. A short message management module for information, a conference management module for system administrators to manage conferences and common users to view conference information, a notification management module for system administrators to manage announcements and for common users to view announcement information, and the current login user A file management module for uploading, downloading, and viewing files, etc. The system development selects the leading development software and technology, that is, chooses Dreamweaver page making software and Photoshop and other technologies to develop system pages, uses JSP dynamic page design technology and Struts, Spring, Hibernate technology, MySQL database management system to develop a powerful and complete database support environment. Key words: work; automation; management information; meeting management; official letter management)