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In order to alleviate the damage of wheat under Cadmium Stress Condition, Using simulating actual pollution, the effects of spraying different concentration of 6-BA on protective enzymes system under Cd2+ pollution were studied. The result showed that different concentration of 6-BA have the relieving effects on heavy metal injury. SOD, POD and CAT activities can be improved in different degree, and the increase of MDA content and electrolyte leakage become much slower. Various concentration 6-BA by spraying have different effects on wheat under Cd2+ pollution: 2×10-5mol/L is the best dose of 6-BA for the changes of SOD, MDA and electrolyte leakage, on the other hand, CAT and POD are significantly affected under 3×10-5mol/L 6-BA. This proved that 6-BA can alleviate the injury of wheat caused by cadmium stress and improve the resistance of wheat seedling.