The scientific projects management system is proposed to alleviate stress of the scientific research managers. It is designed after a study of the needs of X city's scientific projects management. It is developed in Visual Studio 2010 by C# language, and combined with many web technologies (such as SQL Sever online research databases, LINQ and Office etc.). So the users can use it on Internet to achieve scientific projects' declaration, opening, prequalification, acceptance, award and statistics. Through the practical application in X city, the system runs safe and stable.