Mesoscopic dynamics, in this case, refers to the use of coarse granulation technology to study the dynamic behavior of materials and biological systems on the mesoscopic scale. Different from the first-principles methods of molecular dynamics or quantum mechanics at the atomic scale, mesoscopic dynamics focuses on simplifying complex systems through coarse granulation techniques. In the coarse-grained model, multiple atoms or molecules are combined into larger "particles" or "blocks" to reduce the amount of computation and be able to deal with physical processes with larger and longer time scales. The core of coarse graining technology is to capture key physical and chemical properties while omitting detailed information at the micro level. This method enables researchers to observe and analyze mesoscopic phenomena such as the motion of polymer chains and the dynamic behavior of complex structures in cells. Through mesoscopic dynamics simulation, the structure and function of materials can be understood at mesoscopic scale, such as the self-assembly of soft matter, the formation and function of cell membrane and so on. Mesoscopic dynamic simulation plays an important role in the fields of material science, soft matter physics and biophysics because it can bridge the understanding of micro and macro scale.