The invention discloses a processing and packaging device for packaging food with cans. The processing and packaging device comprises a can package conveying device and a food processing cylinder. A discharging pipe is arranged on the side wall of the bottom end of the food processing cylinder in a connected mode. A discharging nozzle is arranged at the tail end of the discharging pipe. A discharging port is formed in the bottom end of the discharging nozzle. An electromagnetic valve is arranged in the discharging nozzle. The discharging port is opened when the electromagnetic valve is poweredon. The discharging port is closed and blocked when the electromagnetic valve is powered off. The processing and packaging device is simple in structure, and continuous proportioning and mixing are achieved in the processing and packaging process of fluid food; a reversely-rotating auger spiral belt drives deposited food materials in a food channel to spirally rise; and meanwhile, the interior ofthe device can be cleaned when processing and packaging are completed.