The pond engineering circular aquaculture model is an intensive ecological aquaculture method that transforms the traditional "open and free range" ponds into "captive" ones. By constructing a water channel and water treatment system, high-density aquaculture and effluent purification recycling are achieved. This model divides the pond into a water aquaculture zone and an ecological purification zone, using water pushing equipment to form directional water flow, allowing fish to swim upstream in the flowing water, enhancing physical fitness and improving meat quality. At the same time, the excrement and residual bait of fish are collected and processed centrally, and after sedimentation treatment, they can be used as organic fertilizer for agricultural planting. The purified water is then returned to the aquaculture area, achieving efficient recycling of water resources.