This experiment will investigate the effects of adding different types of Five types of Bacillus and their complex Bacillus were added to the experimental tank of South American white shrimp to explore the effects of adding different Bacillus on the growth performance and gut microbiota of South American white shrimp in the aquaculture water, as well as the regulation of water quality and the influence of different Bacillus on the microbial community in the water.