Abstract At the 21th century ,With the development of computer science, Database technology is widely used in the people’s life and work. This makes users can enjoy more convenient and individual services. Database technology is the trend of today’s computer applications. In this work, we study the technique to build a software named Contract Stat System in order to introduce the applications of database technology in the people’s life and work. The main work of this paper are : (1) Introduces the Visual Basic6.0 software development tool and introduces the method how to use the software and Ado technology to operate the database. (2) Investigates the system structure and working principle of the Contract Stat System. Analyses the particularity and difficulty of the system. (3) Analyses and resolves the technical problems in implementation. (4) Establishes a test software and analyses the result after testing on it. Key Words Database technology Ado Contract Stat System