Utilizing the scavenging characteristics of black water flies, wet garbage can be reduced, harmlessly and resourcefully treated, and transformed into high-quality insect protein and organic fertilizer. At the same time, it is further processed to produce high-value-added protein feed and organic fertilizers rich in pest and insect resistance factors. Through automated machinery to cultivate black water flies species, it effectively saves corporate costs and efficiently decomposes and utilizes kitchen waste, thereby creating a new industrial model for the utilization of organic waste resources under the urban economic circular development model.