The anode materials of the magnesium batteries are surface-modified by dip coating using a nano-powder emulsion (EMT) with a small molecule water magnetization. XRD and SEM were used to analyze the mi-crostructure and surface morphology of the samples. The effects of different coatings on the corrosion re-sistance of the magnesium anodes were investigated by means of immersion test, EIS and Tafel plots at 25 ℃ in an electrolyte solution with 3.5 % NaCl solution. As a result, the corrosion current densities of the magnesium anodes respectively coated 3, 6 and 9 times are 106.8, 90.74 and 89.0 μA/cm2, which were lower than that of uncoated samples (283.8 μA/cm2). The SEI film forms on the surface of the materials by EMT can effectively inhibit the corrosion behavior of the magnesium anode without affecting the phase structure of the materials, and the corrosion resistance increases with the increase of the number of coatings.