Even on the point that the 3rd National GIS project is being executed following the completion of the 1st and 2nd, the National GIS utilization is still very low. It is well reasonable to anticipate that the utilization will grow much higher, as the national spatial data infrastructure had been almost equipped through the 1st and 2nd project periods. Facing the ubiquitous era, in particular, as the national-level GIS demand is to increase to a great extent, pre-established GIS application scope will become much wider, too. In preparation for these, the current study focused on the National GIS utilization system by reviewing on the execution procedures to evaluate the outcomes. For the actual administration procedures, to note, the National GIS utilization statuses by local municipalities were investigated in depth. And the barriers for the National GIS utilization enhancement were analyzed to look for feasible solutions. The results suggested were aimed to contribute to the amendment of the 3rd Master Plan, and to be used as part of the basic data for the establishment of the 4th Master Plan for the National GIS.