The average water temperature was about 30◦C,which was consistent with the environmental temperature. pH value is very important for growth of shrimp. If the pH value inshrimp pond was higher than expected value, it would be regulatedto a suitable value by drainage and exchange water. It was shownthat pH value was maintained alkalescency during experimentaltime, and the value in the selected river was almost the same asthat of shrimp pond. In addition, it was found that there was nosignificant change of transparency, which indicated that the waterspinach floating bed has little effect on transparency of river. Theaverage value of DO was 3.0 mg/L, which decreased as the watertemperature increased.