Taking COD and NH₃-N as the control index, the pollutant carrying capacity of water function zone in Shanghai were calculated by using the one dimensional tidal river network pollutant carrying capacity model. The results show that the pollutant carrying capacity of COD and NH₃-N in the water function zone of Shanghai is 79. 96×10⁴t/a and 7. 56×10⁴t/a, respectively. Based on the analysis of the water quality and the pollutant discharged in water function zone, the phase goals of water function zone were set up with the goals decomposed from time and space, and the control scheme of the total pollutant discharge limits in different stages of every water function zones were put forward.