Electric power quantity monitor is a premise to provide high-quality electric power, therefore, on the electric power market; it has appeared much more electric power quantity monitoring system based on virtual instrument design technology such as software of LabVIEW. We aims at calculator data processing shortcome of LabVIEW, which is inconvenience in using LabVIEW during databases interface realization. This paper mainly introduces how to realize interface design between LabVIEW and database. As well as introducing ADO technique how to carry out LabVIEW visiting databases. Because design transplantation is stronger, so, system has broad function and application foreground.