This paper reviews the application of computational fluid dynamics (CFD) in the flocculation process.CFD is used to simulate and analyze the flow field and velocity field in flocculation tank during flocculation process.The speed cloud chart,pressure cloud chart and concentration gradient map of flocculation process are obtained,which reflects directly the flocculation process.This parameterization modeling method can simplify research process and provide references for the process research and equipment optimization of the flocculation process.