Abstract: The paper analyses in details the structural features, mechanical properties, evolutionary characteristics and formation mechanism of the metallogenic structural system——Neocathaysian fracture structre——in the Zhaoyuan-Yexian gold belt of Jiaodong peninsula and its control on the gold ore belt. The emphasis is put on the study of structural activity and mineralization time sequence. By applying the theories and methods of the gray-system the authors have solved the problems of establishing a model of the dispersion data of the geological structure of the intrinsic small samples and revealed the changes in the characters, extent, scope and tendency of the inner and outer ore-controlling structure indicators and the regularity of the transfer evolution in multi-dimensional time-space for the mineralization marks and the relative quality of the orebodies. This study presents a new knowledge and way for the study and prediction of concealed ore deposits and prospects.