Accumulation of rare earth elements(REEs) in corn after application of REE-fertilizer was studied by pot experiment and the dose-dependent accumulation of exogenous REEs in different parts of corn was reported. Ratio of La/REE in soil, REE-fertilizers, and different parts of corn was used as fingerprinting in accompany with quantitative information. We found that the exogenous REEs could be incorporated into corn root and stem. When the dose of REE-fertilizer increased, exogenous REEs become gradually dominant in plant root and stem. When doses of REEs increased, REE enrichment factor in corn root and stem increases. It indicates that the bioavailability of exogenous rare earth element should be significantly higher than that in soil matrix. Incorporation of exogenous REE into corn leaf was found by fingerprinting analysis, but no significant accumulation of REEs in corn leaf was found even at high dosage.