Abstract: In this paper,we present a novel V-system descriptor for 2D models；the descriptor is invariant against the rotation,translation,scale transform,and can remove the effect of the arbitrary start point of the shape through the principal orientation.We show that V-system descriptor can be computed efficiently by the fast V-system transformation,and be good at using multi resolution analysis through weighted Euclidean distance.So the new V-system descriptor has some resistance to slightly occlusion,and may achieve good recognition property according to the actual situation.