This article studied the relationship of corn stubbles remained in soil and soil effective trace elements in different corn growth phase.The results showed that the soil effective trace elements with corn stubbles were higher than that without corn stubbles in any corn growth phase.This result proved that corn stubbles in its decomposition period improved soil physical and chemical characters, and promoted trace elements’ transformatiom from ungiveble form into giveble form and increased the effective trace elements in soil. The results above also showed that corn stubble remained in soil was a good way to fertilize soil. The quantity of soil effective trace element in different growth phase proved corn had different period of absorbing peak to different trace elements.