This paper expounds the design and implementation of CDBAG-4GL, i. e. an intergated automatic generators for quickly development of MIS. The architecture design, user interface and characteristics of the system are also briefly described. CDBAG-4GL, which has been commercialized, supports an original method of developing MIS, i.e. Rapid Prototyping. It uses a highly nonprocedural 4th Generation Language(4GL) as the user-friendly interface. According to the application: Requirements, CDBAG-4GL can generate the correspomding specific MIS automatically and quickly.As an integrated general quickly developing tool and environment,CDBAG-4GL can greatly improve the efficiency and quali-ty of the development of MIS,as well as redue the cycle and costs of the develepment.In short,CDBAG-4GL provides and efficient way to standardize,engineerize and automatize the development of MIS