Abstract: Here are introduced two methods to measure the ESR spectra of the erythrocyte membrans, one is using the freeze-dried samples at the room temperature, and the other one is the freezing fresh samples at the low temperature. All these spectra are anisotropic with the orientation of the magnetic field, it maybe is produced by the magnetic interaction among the membrans. The signal of the g=2.0062 is stimulated by the superoxidized ion radicals.