Because of the ineffective dilution process of heavy oil of the primary mixers, the face type spiral blade was selected as the mixing element and the dynamic impeller was added as well, in order to enhance the shear capacity and rotation frequency of the blade. The two parameters of blade pitch and power impeller that effect the mixing effect of the dynamic mixer were numerically simulated and analyzed using the CFD simulation software. Taking the volume distribution of thin oil in the tube as the evaluation standard, the influence of geometric structure of the mixing element to performances of the mixer during the mixing process was studied. The results show that if the blade pitch is too small, it will hinder the flow of fluid in the tube causing the decrease of mixing rate, and if it is too large, it will cause the fluid forward channeling. Much fewer power impellers will reduce the frequency of component rotation, but much more ones will hinder the forward flow of fluid. Finally, the mixing performance of the novel optimized follow?up dynamic mixer was compared with the original mixer. The volume distribution of the thin oil in the new follow?up dynamic mixer is more uniform, which can greatly enhance the mixing effect of thick oil, and is also beneficial to the exploitation of heavy oil resources.