Abstract: This paper studied the change fo surface radical of activated carbon which made from fruit shell of chinese tallar tree.It indicared that after cxidation and chemical maditication treatment,the amount of oxidixing radical increased 2 times and the ratio of carboxyl to hydroxyl increased about 4 times. Furthermore the increation of polarity increased the adsorbability to some solate with certain polarity.it yielded notable effection when it used to purify and regenerate solution of non-cyanide galvanizing