The rotary bag washing machine is suitable for the cleaning of bagged products. In the drum, the bags are thoroughly cleaned by brushing with a brush, spraying with high-pressure water at the upper part, and controlling the discharging time with a screw. The inside is made into a spiral shape with a brush. In the process of cleaning, through the continuous rotation of the cylinder, the bagged food is also continuously rotated, and constantly contacts with the wool roller to clean the oil stains on the packaging surface. The inside is also added with spraying to continuously wash the materials. And the cleaning section is divided into two sections. The former section can add certain detergent and disinfectant for the product, and the latter section can be cleaned with clean water for the second time. The design is more reasonable and humanized. The equipment is suitable for bag food. It can clean the oil dirt and stains on the surface of the bag after packaging, so that the surface of the bag is clean and glossy. The equipment is made of stainless steel. The washing section and the cleaning section are designed separately and run synchronously. It has the characteristics of high degree of automation, convenient operation and maintenance.