A plant seed yield-increasing treatment device, comprising a treatment tube and ultrasonic wave function units provided on the wall of the treatment tube, the treatment tube being provided therein with a conveying screw, one end of the conveying screw being connected to a drive motor a feed port and a discharge port are provided on the treatment tube. A plant seed yield-increasing treatment system, at least comprising two sets of plant seed yield-increasing treatment devices a discharge port of a first set of plant seed yield-increasing treatment device conveys treated seeds into a feed port of a second set of plant seed yield-increasing treatment device. This invention can perform a sufficiently uniform ultrasonic treatment on seeds, efficiently improving the treatment effect, enabling the yield of treated seeds to increase by 10% after the treatment by the device for about one minute the screw conveyance can control the conveying rate flexibly, avoiding a blocking problem, and the screw blades on the screw can serve the function of turning the seeds during conveyance, enabling ultrasonic irradiation to be more uniform this invention substantially realizes a modular structure, being flexible to install and facilitating mass production.Linvention concerne un dispositif de traitement daugmentation de rendement de semence de plante, comprenant un tube de traitement et des unités de fonction donde ultrasonore placées sur la paroi du tube de traitement, le tube de traitement comportant en son sein une vis de transport, une extrémité de la vis de transport étant reliée à un moteur dentraînement un orifice dalimentation et un orifice dévacuation sont placés sur le tube de traitement. Un système de traitement daugmentation de rendement de semence de plante comprend au moins deux ensembles de dispositifs de traitement daugmentation de rendement de semence de plante un orifice dévacuation dun premier ensemble de dispositifs de traitement daugmentation de rendement de semence
