Study on mass transfer characteristics of suspension viscous flow of the underlying was one of the main research directions of micro-hydrodynamics,and it (was) also the key process of formation mechanism of fouling on heat transfer surface.Fouling process (referred to as scaling process) was filled with complex physical and chemical process of multi-scale,multi-factor interaction.Deeply observe and study the formation process of fouling was contributed to a deeper understanding of the formation of fouling.This paper used conductance titration based on the dynamic simulation test fouling detection system.Na2CO3 solution was dripped into the CaCl2 solution at a specified speed.Tlhe uniform suspension formed by mixing was used as experimental medium.Titration speed of Na2CO3 solution dropped to CaCl2 mother solution was precisely controlled by computer,for precisely controlled formation rate of calcium carbonate fouling.The dynamic simulation system can also monitor various fouling characteristic parameters of calcium carbonate fouling on-line at the same time,such as the fouling resistance,corrosion rate,flow resistance,and so on.