The invention relates to a sleeve spot welding machine facilitating blanking. The sleeve spot welding machine comprises a rack and a power distribution control cabinet, wherein a positioning device matched with a sleeve, a clamping mechanism and a welding mechanism are arranged on the rack; the positioning device comprises a support arranged on the rack; two positioning seats are arranged on the support; a positioning inserting shaft matched with the sleeve is arranged on the outer side of one of the positioning seats; a positioning ejection rod matched with a matching groove in the side faceof the sleeve is further mounted on each of the positioning seats and is tangent and matched with the upper and lower surfaces of the matching groove; and the positioning ejection rod is matched withan ejection rod movable device arranged on each of the positioning seats. According to the sleeve spot welding machine, the clamping mechanism matched with the side face of the sleeve is adopted for clamping, and the positioning ejection rods matched with the matching groove is adopted to position the sleeve, so that the situation that the sleeve rotates is avoided, the sleeve is prevented from deviating during the spot welding process, the spot welding precision is improved, and blanking of the sleeve is facilitated.