The utility model discloses a novel tuyere small sleeve for a blast furnace. The device comprises a flange, an inner sleeve, an outer sleeve and a deflector, the outer sleeve sleeves the outer side ofthe inner sleeve; the outer sleeve rear end and the inner sleeve rear end are fixedly connected with the flange; an internal cavity is defined by the outer sleeve, the inner sleeve and the flange; the flow guider is arranged in the inner cavity, and is characterized in that the inner edge of the front end of the outer sleeve is provided with an annular retracting part, the front end face of the annular retracting part is located on the rear side of the front end face of the outer sleeve, the front end face of the inner sleeve is located on the rear side of the front end face of the outer sleeve, and the outer side face of the front end of the inner sleeve is connected with the annular retracting part. According to the utility model, the first annular welding seam is hidden between the front end of the inner sleeve and the annular retraction part; the inner sleeve is used for shielding the first annular welding seam, pulverized coal can be prevented from scouring the first annular welding seam, the area where the first annular welding seam is located cannot be abraded, cracking and water leakage, caused by abrasion, of the first annular welding seam are effectively avoided, and theservice life of the tuyere small sleeve is prolonged.