Abstract: The paper introduced overall structure and selection of monitoring variable of monitoring system of breakout prediction, analyzed several ways to access database in LabVIEW, and selected LabSQL kit to access database. It gave an implementation method of accessing the database of Access in LabVIEW through LabSQL and applied the method in the monitoring system of breakout prediction. The method of accessing database through LabSQL is simple, reduces design cost and has been proved practicable.