Abstract: According to thefeatures of large-medium-sized vein golddeposits and the principle that deposits are controled by fault, the paper introduces the function of wave fault surface with the aid of computer techniques, to study the ore controlled law of fault waveform. In addition, according to the principle of superposition and decomposition of waves, the function of fault waveform is simulated to predict the waveform of fault surface and position of ore bodies, which has provided appossible method to do position-finding predicting of large-medium-sized deep (or along ore vinp strike) vein gold ore bodies.