Abstract: In the structural design of a magnetic drive pump, the durability directly relates to the equilibrium of inner magnetic rotator. How to counteract the axial force is one of the key technologies. For the high-speed magnetic drive pump, the design for equilibrium of axial force is more important. Here an example is taken to illustrate the design of utilizing the cooling system to counteract the axial force, and a kind of calculation method is developed that the common formula proposed here is used to calculate and superpose for different segments. The calculation procedure of the axial force for the high-speed magnetic drive pump is summarized. The tested results show that the high-speed magnetic drive pump designed with this kind of axial force balance method runs smoothly and flexibly.