Taiwan's aquaculture technology is among the best in the world, but due to the physiological metabolism of the aquaculture, the aquaculture wastewater discharged from the aquaculture pond is relatively large, which contains a lot of nitrogen and phosphorus wastes that can be recycled. The aquaponic system can use planted crops to effectively improve the nutrients in the feed, reduce the optimal trophicization of pool water, and achieve water saving effects. An aquaponic floating raft was built this year. There is a cage on the floating raft for planting plants. At the same time, in order to avoid blockage of the cage, shrimp and snails are cultivated in the cage, and the water is kept circulating by feeding on the algae by the shrimps and snails. This experiment explores the effect of setting up aquaponics floating rafts in the ponds on the cultured fish and water quality. During the test period, the relevant water quality test results showed that the floating raft group had similar trends with the control group except for nitrite (Figure 2), while the concentrations of ammonium nitrogen, nitrate and phosphate in the floating raft group were lower than those of the control group at the end of the test (Figure 1) , Figure 3, Figure 4). At the same time, the changes in total nitrogen and COD in the bottom of the pool were detected, and it was found that during the experiment, the increase in total nitrogen in the bottom of the floating raft group was 24.34% of the control group (Figure 5), and the increase in COD (0.04 mg/L) was less than The control group (0.10 mg/L) (Figure 6), and the percentage increase in organic matter was also less than that of the control group (Figure 7; floating raft group 2.59%, control group 4.77%). It shows that for aquaculture ponds, floating rafts can increase production (Table 1), improve water quality, and reduce sediment accumulation. In addition, the rapeseed seeds were planted on the subsoil during the drying pond, and different sowing rates (1g/㎡, 2g/㎡) were tested on the improvement of the subsoil. As a result, the COD value and the reduction of organic matter in the subsoil were negatively correlated with the amount of sowed seeds ( Figure 8, Figure 9).