A three dimensional electrical impedance tomographic method is disclosed. The three dimensional electrical impedance tomographic method includes steps of disposing an implantation body, wherein an electrode array formed by a plurality of electrodes is disposed on the implantation body； disposing an electrode controller to control any electrode in the electrode array； generating more independent voltage data measured on the plurality of electrodes on the same curve surface by combining current control technology or virtual electrode technology； and performing a calculation to convert the plurality of horizontal or vertical voltage data into a three dimensional electrical impedance tomographic image.
