Disclosed is a plant seed ultrasonic yield increasing treatment device, comprising a container and a frame, wherein the container is fixed inside the frame, a flow orifice is arranged on the bottom of the container, a circulation water pipe is arranged between the container and the flow orifice, a seed liquid circulation pipe is arranged between the flow orifice and the outer side of an ultrasonic function tank, the circulation water pipe and the seed liquid circulation pipe are connected at the position of the flow orifice, and several ultrasonic transducer devices are arranged on the outer side wall of the container and the seed liquid circulation pipe. The beneficial effects of the present invention are: the device can stimulate the germinating and growing impetus of the seed germ, the germinating and seedling rate is high, and the anti-virus capability is increased. At the same time, the ultrasonic waves can effectively inhibit and further kill germs, eggs of pests, larvae and viruses attached to and infected by the seed surface, thereby improving the interspecies competitive ability of the plant population and the ability thereof to absorb nutrient components in the natural world and reproduce, so as to achieve the effect of yield increase.L'invention concerne un dispositif de traitement qui permet d'augmenter, par ultrasons, le rendement de semence de plante et qui comprend un récipient et un cadre, le récipient étant fixé à l'intérieur du cadre, un orifice d'écoulement étant ménagé au fond du récipient, un tuyau d'eau de circulation étant disposé entre le récipient et l'orifice d'écoulement, un tuyau de circulation de liquide de semence étant disposé entre l'orifice d'écoulement et le côté extérieur d'un réservoir de fonction aux ultrasons, le tuyau d'eau de circulation et le tuyau de circulation de liquide de semence étant reliés à l'emplacement de l'orifice d'écoulement, et plusieurs dispositifs de transducteur à ultrasons étant disposés sur la paroi latéra
