Cyclone dust collector is a kind of dust removal device. The dedusting mechanism is to make the dust-bearing air flow rotate, the dust particles are separated from the air flow by centrifugal force and collected on the wall of the device, and then the dust particles fall into the dust hopper by gravity. Each component of cyclone dust collector has a certain size proportion, and the change of each proportion relation can affect the efficiency and pressure loss of cyclone dust collector, among which the diameter of dust collector, the size of air inlet and the diameter of exhaust pipe are the main influencing factors. In use, it should be noted that advantages can also be turned into disadvantages when a certain threshold is exceeded. In addition, some factors are beneficial to improve the dust removal efficiency, but will increase the pressure loss, so the adjustment of each factor must be taken into account.