This invention provides a seed-sorting apparatus that includes an alignment trough having a plurality of grooves into which the seeds are distributed, a line sensor camera for inspecting the seeds, a nozzle device having a number of nozzles that is the same as the number of grooves on the upper surface of the alignment trough, and a control unit. The control unit, through a series of calculations, is capable of differentiating between different types of seeds and can direct a seed sorting and sucking device to suck the seed.