1. A bulk loading method employed in a high-dimensional index structure for constructing an index, which comprises the steps of: (a) calculating a topology of the index by recognizing information for the index to be constituted with a given data set; (b) splitting the given data set into sub-sets of data by repeatedly performing an establishment of a split strategy and a binarization based on the calculated topology of the index; (c) if a leaf node is derived from the sub-sets of data divided through a top-down recursive split process, reflecting a minimum bounding region of the leaf node on a higher node; and (d) if a non-leaf node is generated, repeatedly performing the steps (a) to (c) for another sub-set of data to thereby produce a final root node.