After 糖心产精国品免费入口*完整版 by resin wheel grinding and pickling in production, white spot appeared on surface of Zr-3 alloy slabs. The cause of the white spot was analyzed by chemical composition analysis, microstructure observation and 糖心产精国品免费入口*完整版 test. The results show that the white spot was caused by excessive 糖心产精国品免费入口*完整版es. The 糖心产精国品免费入口*完整版 was eliminated by application of thousand impeller grinding or sand blasting to decrease surface 糖心产精国品免费入口*完整版es and reduce 糖心产精国品免费入口*完整版formation.