To solve the problems of the existing expert management information system, such as lack of general standard and lag of technical operation, etc., an Internet-based EMIS expert management information system is designed and implemented by using ASP.NET technology and multi-layer B/S structure mode. The system integrates three functions, i.e. network reporting, online review and automatic management, unifies the expert accreditation procedures and criteria and solves the confusion problem of the expert information structure system. It also reduces complexity and cost of system development, increases integrability and scalability, and provides an effective solution for the construction of national expert management information system.