Abstract: There are large amount of data from many monitor sites of a large monitor system on a large scale slope. A traditional database system is difficult to visually inquire and analyze these monitor data. The authors developed a visual inquiry and analysis system for the monitor information by using the object oriented programming language Visual Basic and the object oriented database management development system Access based on Window Operation System. In this paper, taking the shiplock slope of Wuqiangxi Hydropower Station as an example, a programming of the system and functions of program are described.