In July 1997, Robert Davinroy published his paper Application of Micro-scale River Engineering Model in Mississippi River in the journal of Civil Engineering, in which he introduced a new patented technique for Micro Scale Physical Modeling. A physical model with relatively big scale and large variability was adapted to simulate hydrodynamics and sediment transport in rivers. This technique has been applied to many research projects successfully, such as channel regulation in Mississippi and Missouri, investigation of living environment of fish and wild animals. The experiment cycle is as short as numerical models and it’s more intuitive. Besides it can also provide good accuracy even compared with those large scale river engineering models. Because there are not many details given in his article, we will continue to investigate this technique based on his introduction in order to provide reference for waterway regulation engineering projects of the Yangtze River.