Qualitative analysis and discussion of the theoretical curves measured performance "Micro Cooling Fan" performance curve, namely the pressure p, efficiency?, Power and flow rate Q N curve, with centrifugal pump performance curve is completely analogous. However, due to differences in the physical properties of the fluid, such that in practice, the centrifugal fan and the pump performance curve is different. Such as "Micro Cooling Fan" of static pressure, static efficiency curve, centrifugal fan performance curve dimensionless all have important applications in the fan. Both before and after the impeller vanes are disposed above two types of synthesis, leading leaf rotatable condition may be adjusted. "Micro Cooling Fan" While this type of work is good, but the structure is complicated, only for axial fans.