Computer aided design and reverse engineering are used wildly in industrial and played an important role for surface modeling。Continuity is the pivot factor for pursuing the beauty of product and the convenience of manufacturing process whether the surface data are derived from surface modeling or reverse engineering.The purpose for this research is to promote the efficiency of surface-continuity adjustment by automatic process. This research attempts to build an automatic process by getting the geometry and topology data from surface and tries to construct the reference of patches.After the automated contunuity adjustment, G2 condition of class-A quality of surface can be obtained more easily.