The invention discloses a storing method of corn seeds. The storing method comprises the following steps: 1, seed optimal selection and marking are conducted, specifically, the mature core seeds withgood plant growth vigour, lodging-resistant germplasm and full grains are selected, harvested and marked with the batch; 2, sun-curing and impurity removing are conducted, specifically, the harvestedoptimally-selected seeds are evenly tedded, and soil, weeds and not full grains in the seeds are picked and removed; 3, the germination rate is detected; 4, sterilization is conducted; 5, drying is conducted; 6, seed coating is conducted; and 7, storing is conducted, specifically, the seeds are stored at the low temperature. According to the storing method of the corn seeds, the problems that as for an existing storing method of the corn seeds, the insect attack and mildew generating rates are high, and the germination rate is low are solved.