采用系统研究方法，对城市水环境承载力的概念、实质、功能及定量表达方法作出了分析，并利用系统动力学模拟手段进行了实证研究，利用水环境承载力指数变化对拟定的调整策略变量作出了预测、优化，得出了较满意的结论。

This paper had made analyse of the concept,nature,function and quantitative description method of the carrying capacity of municipal water environment by means of the systematic study method. It also has made the case study with the systemic dynamic simulation method and the forecast and optimization of the adjustment policy variables with the variation of the carrying capacity indices of water environment. Eventually satisfactory conclusions are obtained.