<p>In order to study whether the metal rubber can be applied to the motor core, this paper studies the magnetic properties of the metal rubber core. By establishing the metal rubber space circuit model, it is concluded that the overall resistance value of the network structure is about equal to the contact resistance value, so the magnetization and demagnetization process is faster and has lower coercivity. The magnetic conductivity of metal rubber in magnetic field is analyzed by finite element method. When the vertical magnetic field is applied, the maximum magnetic flux density of the double-layer metal rubber mesh model is 13.96% lower than that of the single-layer metal rubber mesh model, the maximum magnetic flux density of the sandwich metal mesh model is 32.76% lower than that of the double-layer metal rubber mesh model, and the maximum magnetic flux density of the sandwich metal mesh model is 42.14% lower than that of the single-layer metal rubber mesh model. When the radial magnetic field is applied, the decrease percentage of magnetic flux density is almost the same. Two groups of metal rubber cores with the same density and different sizes were prepared. The magnetization curve and hysteresis loop of the two groups of cores were tested by the soft magnetic DC test system. The experimental data show that the permeability of the metal rubber core exceeds the permeability of the metal wire itself. It is found that the metal rubber mesh structure improves the permeability compared with the solid structure of the same volume. However, the metal rubber core volume increases, the smaller the magnetism, and the magnetism decreases with the increase of relative density. Comprehensive analysis of the metal wire spiral structure can improve the magnetic conductivity of the iron core.</p>