Abstract: Early screening and diagnosis of diseases, such as malignant tumor and stroke, have always been the focus in the field of clinical medicine. Combined with modern imaging methods, a magnetic-resonance-imaging (MRI) based electrical characterization method for biological tissues was proposed. According to the fact that MRI scanning signal having the information of the electrical conductivity and dielectric constant in target body, the interaction between radio frequency magnetic field and electrical properties under the Faraday's and Ampere's laws was derived. Taking the volunteer's head as the condition of the imaging experiment, a high field MRI scanner experiment was carried out based on a double-angle method with spin echo sequence to obtain the preliminary images for the radio frequency magnetic fields and the electrical properties.Results show that, when the gradient terms were involved in the improved algorithm, the electrical characterization of different tissues shown in the image was more evidence. Compared with the traditional electrical impedance tomography and conventional MRI, the new magnetic resonance electrical properties tomography presents higher contrast and higher resolution.As a kind of functional imaging, it is hopeful to be used in the prevention and diagnosis of relevant major diseases.