The integrated restoration project in Lake Lichee in Shenzhen, China, is taken as a case study to investigate the treatment effect of the different units in the restoration project based on 9 months', field monitoring data. The results showed that, the mean removal rates were 33.6% for TP and 16.2% for COD via a filtration unit; 39.0% for TP and 21.3% for COD via a bio-gravel-layer unit; and 80.2% for TP and 56.1% for COD via a man-made wetland unit. A total phosphorus modeling of each sub-lake for Lake Lichee was developed and applied to compute time needed to improve water quality to match Grade IV of surface water standard under the designed conditions. The result showed that it will take 2.5d subject to 24h operation of the restoration project per day to reduce TP concentration lower than 0.1mg/L in Lake Lichee. During the process, TP removal load is about 7.27kg, and the removal rate is almost 46.9% in Lake.