Sampling inspection tool for drill bit

The utility model discloses a drill bit sampling inspection gauge which comprises a supporting box body and an inspection plate arranged right above the supporting box body, the inspection plate is provided with a plurality of inspection holes with different diameters, and the diameter of each inspection hole is matched with the outer diameter of a drill bit. The upper end face of the supporting box body is provided with circular positioning grooves corresponding to the detection holes, and the side of each detection hole is provided with a corresponding diameter mark. According to the utility model, the plurality of detection holes with different diameters are arranged on the detection plate, so that the detection requirements of drill bits with different diameter specifications are met; the circular positioning groove is formed in the supporting box body, the drill bit is prevented from inclining after being longitudinally placed into the detection hole, the structure is simple, use is convenient, and the d