The type, size and speed of the agitator have an impact on the distribution of stirring power between the overall flow and turbulent pulsations. In general, the power distribution of a turbine agitator is good for turbulent pulsation, while a propeller agitator is good for the overall flow. For the same type of agitator, under the same power consumption, the power of the agitator with large diameter and low speed is mainly consumed for the overall flow, which is conducive to macroscopic mixing. The power of the small-diameter, high-speed agitator is mainly consumed by turbulent pulsation, which is conducive to microscopic mixing. The scale-up of agitators is a complex process-related problem that has so far only been scaled up to industrial scale by step-by-step empirical scale-up and based on the scale-up criteria obtained.