The series is first dispersed - post-grinded. The machine is suitable for waterborne coatings as well as oily coatings. The innovation is that the process of first dispersion-post-grinding can be carried out. Due to the first dispersion and post-grinding process, a good grinding effect can be achieved for materials with high solid content and high viscosity materials. It can be used for fine grinding of slurry when grinding. It can be used as a dispersing machine when it is used alone. It can realize two functions of dispersing function and grinding on one machine.