The invention discloses a spray irrigation device for seedling based on a jet flow raw material, which comprises a fixed bottom plate, a water tank is fixedly connected with the left side of the upperpart of the fixed bottom plate, a motor base is fixedly connected with the right side of the upper part of the fixed bottom plate, a motor is fixedly connected with the upper part of the motor base,the motor is a double-shaft motor, a drive bevel gear is fixedly connected with the output end of the right side of the motor, a longitudinal fixed shaft is rotatably connected with the right side ofthe upper part of the fixed bottom plate, a driven bevel gear is fixedly connected with the upper part of the longitudinal fixed shaft, the driven bevel gear is meshed with the drive bevel gear, a first transmission rod is rotatably connected with the left eccentric position of the upper part of the driven bevel gear. Compared with the prior art, the invention has the beneficial effects that the invention is simple in structure, convenient to use, when not in use, the device can fully mix fertilizer with irrigation water and then the irrigation uniformity is ensured, a periodic fertilization method is utilized in irrigation at the same time, fertilization of fertilizers in a sector without seedlings is avoided and full use of the fertilizers is ensured.