An abrasive peening apparatus, comprising: a processing tank configured to store abrasive particles and peening liquid , the processing tank including a bottom portion in which a workpiece is immersed in the peening liquid ; a dispensing chamber having a plurality of recesses on an upper surface, the dispensing chamber disposed in the bottom portion , the dispensing chamber configured to dispense the peening liquid ; a stirring nozzle disposed at a center of each of the recesses directing vertically upward, the stirring nozzle connected to the dispensing chamber to eject the peening liquid ; a peening nozzle immersed inside the processing tank , the peening nozzle configured to eject the peening liquid toward the workpiece ; and a moving device configured to move the peening nozzle relative to the workpiece , wherein the stirring nozzle includes a body extending upward, a peening liquid inlet located at a lower end of the body , an internal outlet located inside the body , the internal outlet connected to the peening liquid inlet , an outlet located at an upper end of the body , a passage connecting the internal outlet and the outlet , the passage extending vertically inside the body , and an abrasive particle suction port located on an outer surface of the body inside the recess , the abrasive particle suction port connected to a lower end of the passage . a processing tank configured to store abrasive particles and peening liquid , the processing tank including a bottom portion in which a workpiece is immersed in the peening liquid ; a dispensing chamber having a plurality of recesses on an upper surface, the dispensing chamber disposed in the bottom portion , the dispensing chamber configured to dispense the peening liquid ; a stirring nozzle disposed at a center of each of the recesses directing vertically upward, the stirring nozzle connected to the dispensing chamber to eject the peening liquid ; a peening nozzle immersed inside the processing tank , the peening nozzle configured to eject the peening liquid toward the workpiece ; and a moving device configured to move the peening nozzle relative to the workpiece , wherein the stirring nozzle includes a body extending upward, a peening liquid inlet located at a lower end of the body , an internal outlet located inside the body , the internal outlet connected to the peening liquid inlet , an outlet located at an upper end of the body , a passage connecting the internal outlet and the outlet , the passage extending vertically inside the body , and an abrasive particle suction port located on an outer surface of the body inside the recess , the abrasive particle suction port connected to a lower end of the passage . a body extending upward, a peening liquid inlet located at a lower end of the body , an internal outlet located inside the body , the internal outlet connected to the peening liquid inlet , an outlet located at an upper end of the body , a passage connecting the internal outlet and the outlet , the passage extending vertically inside the body , and an abrasive particle suction port located on an outer surface of the body inside the recess , the abrasive particle suction port connected to a lower end of the passage . <EOS>