Abstract: Based on the characteristics of centrifugal pump structure, this article inquires into the suitable transporting capacity of centrifugal pump and emphatically discusses the adaptable capacity of centrifugal pump with dual rotators in different transporting capacity conditions. It puts forward the combination of different arrangements of centrifugal pump with dual rotators along with the changes of pipeline transporting capacity, so that pifeline oreration would always keep cn the high efficient levels in case of the changes of transporting capacity. At the end, the paper also makes an in- troduction on the structure of centrifugal pump with dual rotators.