Water pollution and eutrophication control in reservoirs are important to ensure the safety of urban water supply. Four ecological purification pilot reservoirs (A, B, C and D) and one controlled reservoir with 240 m² area were constructed in Linjiang Water Plant characterized by high concentrations of nitrogen and phosphorus. The effects of different reservoir configurations, the proportion of aquatic plant planting area, and planting methods on the removal of total nitrogen (TN) and total phosphorus (TP) were determined according to the pilot reserves. The results showed that the average removal rates of ammonium nitrogen (NH₄⁺-N), TP and TN for the inflow water were 50.36%, 53.73% and 22.25% by the ecological purification of the pilot reservoirs, respectively; C reservoir had the highest removal rates of TN and NH₄⁺-N of 24.97% and 54.61%, respectively; the highest removal rate of TP was found at D reservoir of 62.16%; the average dissolved oxygen (DO) concentration and transparency of the four pilot reservoirs increased by 1.11 mg/L and 27.6 cm, respectively, which was significantly higher than those of the controlled reservoir. The shape and structure of the reservoirs, the proportion of aquatic plant planting area, and the planting methods had obvious influences on the purification of TN and TP. The increase of shallow water area can effectively improve the removal of TN and TP; the increase of the planting area of aquatic plants can effectively increase DO concentration, improve the removal of TN, and enhance the transparency; the planting method of floating bed can effectively promote the removal of TP and enhance the transparency. The results of this study provide a scientific basis for the design and construction of Jinze Reservoir and other similar reservoirs as water sources.