The invention discloses a kind of corn seed selection and seed dressing equipment, which includes a feeding system, a photodetection system, a screening system, a moving system, a spraying system, a drying system, a coating system, and a solid seed dressing system; During the seeding process, the damage to the corn seed material is minimal, and the skin of the seed material will not be damaged. The loss rate of raw materials is low, the seed selection effect is good, and the seed selection efficiency is greatly improved. The equipment of the present invention can not only detect whether the outer structure of the corn seed material is damaged, but also detect and identify the color and overall plumpness of the corn seed material, so as to realize the effective detection of whether the seed material itself has diseases. The equipment can realize the double seed dressing process of the corn seed material, the seed dressing effect is uniform, and the use effect of the seed material after seed dressing is good, which eliminates the burden of the second seed dressing on the farmer and effectively prevents the farmer from doing the seed dressing operation by himself Adverse consequences of non-compliance.