The invention relates to a wheat wide-seed-strip planting uniform seeder. The wheat wide-seed-strip planting uniform seeder comprises a seed tube, protecting plates, separating plates, a baseplate and an auxiliary seed metering cone, wherein the seed tube is connected with an external seed metering device and conveys seeds discharged out of the seed metering device; the auxiliary seed metering cone uniformly disperses seeds in the seed tube and used for improving the equalization probability when the seeds fall down from the seed tube; the protecting plates are used for preventing the seeds from leakage; the baseplate keeps a certain dip angle with the ground, so that the seeds can conveniently fall down along a seed metering ditch on the inclined baseplate; the separating plates are used for dividing the baseplate into a plurality of seed metering ditches and enabling the seeds to be discharged out of the seed metering ditches so as to increase the seeding uniformity. The semi-circular-ring-shaped structure is adopted for uniform distribution of falling seeds, the auxiliary seed metering cone enables the falling seeds to be uniformly distributed in the seed metering ditches, the necking seed metering ditches restrain the seed falling process, and the wheat wide-seed-strip planting uniform seeder is simple in integral structure, high in seeding quality, good in uniform distribution effect and convenient to refit.