The modern seawater aquaculture model is an efficient, environmentally friendly, and intensive aquaculture method developed with the advancement of technology and the rise of sustainable development concepts, aimed at increasing production, reducing environmental impact, and adapting to different sea conditions. The main modes include deep-sea net cage aquaculture, multi nutrient level comprehensive aquaculture, land-based seawater pond engineering aquaculture, intelligent aquaculture systems, etc. The modern seawater aquaculture wastewater treatment modes are mainly divided into four categories: physical treatment, chemical treatment, biological treatment, and comprehensive treatment. Each mode achieves wastewater purification and resource utilization through different technological combinations.