The invention discloses a seed packaging device and particularly relates to the technical field of seed packaging. The seed packaging device comprises a packaging body frame, a rotating disc, a film pressing sealing machine, packaging box groove bodies, packaging boxes, a transmission belt, infrared inductor sets and a seed discharging machine. The seed packaging device is characterized in that the film pressing sealing machine is arranged on the top of the packaging body frame; the rotating disc is arranged under the film pressing sealing machine; the packaging box groove bodies are arranged on the circumference of the surface of the rotating disc; the packaging boxes are arranged in the packaging box groove bodies; the transmission belt is obliquely arranged below the right side of the rotating disc and is close to the bottom of the packaging body frame; the corresponding infrared inductor sets are arranged on the two sides of the opening positions of the packaging box groove bodies; the corresponding infrared inductor sets are arranged at the left end and the right end of the film pressing sealing machine; and the seed discharging machine is arranged on the left side of the film pressing sealing machine. The seed packaging device has the beneficial effects of being simple in structure, convenient to operate, capable of saving manpower and space and the like.