Abstract: The experiment is study the effect of wheat straw returning on the growth of corns under the field conditions, in order to provide a scientific basis for the realization of scientific and rational straw returning agronomic measures. The field experiments, setting eight treatments with different amount of fertilizer and straw returning, were carried out to study the influence of wheat straw returning on the seedling growth, maturity biology and economic traits of corns by testing the seedling emergence, root activity and biological traits. With adequate water and fertilizer, and the full amount of the wheat straw returning, the growth situation of corn seedlings was much better than without wheat straw returning and the double amount of wheat straw returning. With the passage of time, the effect of wheat straw returning on the growth of corns was weakening, and corns were growing well. Follow the amount of straw returning form high to low; compared with control group 1, production increased 2861.95 kg/hm², 2567.34 kg/hm² and 2525.25 kg/hm², growth of 68%, 61% and 60% respectively. The results of the corn maturity test showed that, the wheat straw returning could help to reach a significant yield of corns with the totally normal fertilization and poured secondary permeable conditions. By adjusting agronomic measures, the negative effect of excess straw could be mitigated and the adverse effects of straw returning on the next crops could be reduced, so that to increase the yield and quality of corns.