VIC mixer was a new type mixing equipment, and both had internal mixer's and open mixer's advantages. Meshing clearance of VIC mixer can be changed in the mixing process at any time by the eccentric bearing. The meshing clearance can be changed at different stages of the mixing process to adjust the different mixing formula and process. Through the experiments we had found that VIC mixer have a good mixing temperature control, cooling efficiency and low peak value in power when the meshing clearance is small. When the meshing clearance is large there is a high feeding speed, energy utilization efficiency and dispersion.