Abstract:stress. The correlation analysis between cytochrome synthesis and heavy metal indicated that the synthesis of corn cytochrome depend on the metal type. There was significant correlation between Pb content and β-carotenoid content, while Cu content was significantly correlated with anthocyanin content. The results revealed that Pb exerted more effects in inducing β-carotenoids, while Cu made much more important roles in inducing anthocyanins. All of these would provide a scientific basis for plant heavy metal toxicity and resistance mechanism.