The present invention relates to a bag filter cyclone dust collector, which is produced by integrating a cyclone collecting dust using a centrifugal force and a bag filter filtering and removing the dust using a filter bag for reducing the cost and space. The present invention integrates the cyclone to the size surface of the bag filter, after passing inflowing air through a vertically formed venturi pipe inside the cyclone, thereby precipitating heavy dust passed through the venturi pipe in a cyclone room and inflowing light dust through a lower side surface of the bag filter through a distributor. Gas flowing into the lower side surface of the bag filter is discharged from the filter bag after removing the dust.
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