This paper studies on the design methods and key technologies of the system of rolling mill equipments management based on Web, in accordance with the the practical needs. This system adopted B/S as its structure, while developing software for rolling mill equipments management on the platform of Microsoft Visual Studio.NET. The system uses a three-tier hierarchical structure: User layer, Web Server layer and Database server layer. User layer refers to the user through the browser to complete the system remote services and information sharing. Web server layer is the link to contact the browser and the database, and used to store system function modular and application program. Database server layer is mainly used to store various data required for the system after being put into practice for a period, the efficiency of maintenance and management of rolling mill equipments has been increased obviously, thus the method can be used in the maintenance of rolling mill equipments.