Abstract: In a solution of HCl-SCN^- and non ionic surface active agent-TriTon X-305, the copper produces a sensitive catalytic polarographic wave at -0.65℃(VS·SCE). Compared and common catalytic wave. The peak current is increased by 4～5 times. Cu(Ⅱ) in human hair can be determined nt this method. It can be used to determine trace amounts of copper over the range of 5×10^-9～5×10^-7 g/mL. The detection limit is 1×10^-10 g/mL. This method is rapid、simple、sensitive and accurate.