At present , the computer programs widely used in China mine for ventilation design are mostly developed by BASIC, which can only be run in DOS. Based on the analyses of the disadvantages of the existent programs,a new visual ventilation calculating program has been developed using Visual Basic 6.0 and some improvement has been done. In this paper,it is introduced that the visual developing course of the program and the modules added to it newly. As a result, it has been proved by practice that the new visual program has a higher computing precision, especially the added new function of database management greatly improved its running efficiency and using convenience.