The invention discloses a vector data slicing method and system based on a data exchange format. The slicing method comprises following steps: setting structures of original images as the vector data exchange format, wherein geometry types of geographic data structures represented by the vector data exchange format comprise points, lines, surfaces, multiple lines and sets of multiple surfaces; disassembling original images with the vector data exchange format to be at least one object, wherein objects for the original images with the vector data exchange format comprise geometry types of geographic data structures or objects as well as a group of methods expressing objects; classifying objects for the original images with the vector data exchange format and determining derived relations of the objects for the original images with the vector data exchange format after grouping; and slicing the classified objects for the original images with the vector data exchange format according to a rectangular blocking manner.