Based on practical production,effects of pre-treatment of wear resistant ring,quality of liquid Al alloy,operation programs of the worker on the bonding quality of wear resistant ring in the piston were analyzed. After pre-treatment for wear resistant ring,on the one hand,cleanness of the wear resistant ring should be ensured,on the other hand,storage time should be strictly controlled to prevent erosion from the wear resistant ring. During production process,time of infiltrated-liquid aluminum alloy should be rationally controlled to avoid high Fe content and gas content in the liquid alloy influencing bonding quality of wear resistant ring. Before putting in or taking out wear resistant ring from the liquid Al alloy,oxidized film on working region of wear resistant ring should be cut to avoid oxide film adhering surface to form black oxide film defects. In addition,skills of worker should be improved to shorten transferring time of wear resistant ring,which could decrease the bonding defects of alloy. Based on above methods,the programs were set standard and strictly implemented,effectively decreasing scrap rate of the castings.