Considering the typical irregularities in vector road map layer, this application is used to determine the relationship among the various connecting roads, extend the straight-line segment, and replace the straight-line segment. The standardization of the original road layer node matching algorithm is presented. Through application of the algorithm presented, the standardization of road map layer of MapInfo is achieved in the VB6.0 development environment with MapX control. The experimental results show that the algorithm can be applied to the topology complexity road.