Novel PCD grinding wheel

The utility model relates to a novel PCD grinding wheel. The problems that PCD blocks drop easily when PCD grinding wheels are used, and the PCD grinding wheels are low in welding strength and short in service lives and cause resource waste are effectively solved. The technical scheme is that the novel PCD grinding wheel comprises an open bowl-shaped steel substrate, the center of the bottom of the steel substrate is provided with a first through hole, the side of the steel substrate is provided with a plurality of second through holes distributed evenly circumferentially, the upper end of the steel substrate is provided with the upper surface extending out outwards around the outer edge surface of the upper surface, a plurality of staggered and circumferentially evenly distributed notches which form 15-degree inclination angles with the upper surface are respectively milled on the upper surface close to an inner ring and an outer ring, the notches are provided with matched silver soldering flakes, PCD blocks