本文提出了一个沉淀池模型试验的模拟概念，并对试验结果从理论上进行了分析文中同时对沉淀池的模型律及其水流结构圆形提出了与目前理论不同的理解，提供了现有许多沉淀现象的解释和可能的研究新途径。 In this paper, a simulation concept of sedimentation tank model test is put forward, and the experimental results are theoretically analyzed. At the same time, the model law of the sedimentation tank and the circular structure of its flow structure are proposed. Different understandings are given from the current theory, and many existing Precipitation phenomenon explanation and possible new ways of research.