"Micro Cooling Fan" hub and a plurality of blades, a plurality of blades provided on the outer periphery of the hub wall, wherein the upper surface of each of the blades and / or the lower surface of the intersection of the cylindrical surface of the first curve with at least two sub- The period of construction of the anti-parabola, which coincides with the central axis of the central axis of the first cylindrical surface and the "Micro Cooling Fan" wheels, anti-parabola when a plurality of blades configured to rotate from the fan blowing wind will converge to the inverse of the parabola near the focus. According to an embodiment of the present invention the blades at high speed rotating blade, there is a convergence point from the "Micro Cooling Fan" fan blowing wind, making the blades with a wind capacity, high speed and high-performance advantages.