A novel oxygen-enriched method is presented.Using two opposite magnetic poles of two magnets with certaindistance forms a magnetic space having a field intensity gradient near its borders.When air injected into themagnetic space outflows from the magnetic space via its borders,oxygen molecules in air will experience the in-terception effect of the gradient magnetic field,but nitrogen molecules will outflow without hindrance.Therebythe continuous oxygen enrichment is realized.The results show that the maximum increment of oxygen concen-tration reaches 0.49% at 298 K when the maximum product of magnetic flux density and field intensity gradientis 563T~2/m.The enrichment level is significantly influenced by the gas temperature and the magnetic field.Themaximum increment of oxygen concentration drops to 0.16% when the gas temperature rises to 343 K,and dropsto 0.09% when the maximum product of magnetic flux density and gradient is reduced to 101 T~2/m from 563T~2/m. A novel oxygen-enriched method is presented. Using two opposite magnetic poles of two magnets with certain distance features a magnetic space having a field intensity gradient near its borders. Whi air injected into the magnetic space outflows from the magnetic space via its borders, oxygen molecules in air will experience the in-terception effect of the gradient magnetic field, but nitrogen molecules will be outflow without hindrance. Thereby the continuous oxygen enrichment is realized. the results show that the maximum increment of oxygen concen- tration reaches 0.49% at 298 K when the maximum product of magnetic flux density and field intensity gradientis 563T ~ 2 / m. enrichment level is significantly influenced by the gas temperature and the magnetic field. maximum increment of oxygen concentration drops to 0.16% when the gas temperature rise to 343 K, and dropsto 0.09% when the maximum product of magnetic flux density and gradient is reduced to 101 T ~ 2 / m from 563T ~ 2 / m.