The utility model provides a dust removal and recovery unit of spraying tungsten carbide granule, including setting up in the shutter grille of spray booth one side, shutter grille's the outside is provided with water curtain, and water curtain's bottom is provided with the sedimentation tank, and water curtain's top is provided with high -order overflow water tank, and the top of high -order overflow water tank is provided with high flush tank, high flush tank's bottom set up and high -order overflow water tank between form the cascade, one side that shutter grille was kept away from to the cascade is provided with airflow pipeline. The utility model discloses a dusty airflow and water curtain, the wet contact of cascade second grade, make the air current in the tungsten carbide granule can not rise along with the air current by effect of gravity because of meeting water, but flow into the sedimentation tank along with rivers and is collected, the tungsten carbide granule is water insoluble, also not because of water corrodes, spraying tungsten carbide composition and current situation that the water -cooling was collected do not change, behind washing and drying, the recycling ofbeing convenient for.