We try to construct integrated multi-trophic aquaculture systems and build a mutually beneficial ecosystem by using different habits of aquatic organisms and absorption of different nutrients in polyculture of seawater ponds. The model of mutually beneficial ecosystem can decrease the environment destruction, water consuming and the environment pollution during the process of the cultivating and the effective method to reduce the ocean resources consuming. In this year, we intend to culture the Snubnose pompano in the constructed integrated multi-trophic aquaculture (IMTA) system that combing the cultivation of fish with Gracilaia and oyster in salt water and evaluate the benefits of farming. We hope to develop friendly farming systems to produce safe aquatic products, enhanceproduction value and promote industrial upgrading.Through combining the cultivation of finfish with Gracilaia and oyster, we have uccessfully established integrated multitrophic aquaculture (IMTA) system. Furthermore, photosynthesis bacteria were used to improve the water quality. After 10 months of rearing, the growth in weight (total length) of pompano increase from 65.3±9.6g to 665.5±69.5 g (13.1±0.3 cm to 25.7±0.7 cm) in in the northern system. Finally, during the period of experiments, pH, temperature, salinity, transparency, dissolved oxygen in fish ponds are suitable for breeding, and ammonia nitrogen, nitrite nitrogen concentrations are also below the safe concentration.Then, total weight 987.0 kg was harvested after 10 moths breeding, and and feed conversion ratios (FCR) of the fish were 2.02.