The invention provides an electrochemistry geophone sensitive electrode comprising the following units: a support substrate made of an organic insulator and having at least one support substrate through hole; two electrode layers respectively covering the top surface and bottom surface of the support substrate, wherein the two electrode layers are respectively provided with at least one electrode layer through hole, and a channel is formed between the electrode layer through hole and the support substrate through hole. In addition, the invention also provides an electrochemistry geophone sensitive electrode preparation method. The gap between the cathode and anode is reduced, thus greatly improving the sensitive electrode sensitivity, and reducing the assembling difficulty; the preparation method is simple and low in cost.