Abstract: The experiment have been selected the Triticum aestivum Linnand Zea mays L. two different plants for 60 days imitate in the laboratory. According to measure the oil contaminated soil toleranceof two different plants and the oil pollution stress on petroleum contaminated soil restoration potential effect,which hope to provide a theory basis in future remediation cases. The experiment set up 0%,0.5%,1.5%,3% four groups of polluted soil respectively,and doing the experiment that culture the tested plants of wheat and corn in the greenhouse by pot. The results shows that the germination rate of tested plants in the petroleum coercion all shows downward trend,and have an extremely influence on the result when the density reach to 3%;The petroleum density to the wheat and corn have an inhibition actions,compare CK with the height,the number of leafs,the dry substance,which have an obvious descend trend. The content of chlorophyll decreased with the petroleum density increasing for wheat and corn. The content of MDA,soluble protein in the wheat leafs,which shows firstly increased and then decreased with the petroleum density increasing,but the content of MDA increasing with the petroleum density increasing,the content of soluble protein shows a decreased trend with the petroleum density increasing.

Key words: different petroleum density, petroleum pollution soil, corn, wheat, physiological index