A method for determination of copper by linear sweep anodic stripping voltammetry using selfassembled monolayers of Au clusters /nanoparticles on a gold electrode surface is reported in this paper. It has been shown that in a 0.2mol/L NaCL ， the enrichment potential is -0.25V， and the peak current determined by the Au nanoparticles modified gold electrode is 9.746×10-8A， and the peak current determined by the bare gold electrode is 2.335×10-8A.The peak current of the modified gold electrode is obviously larger than the peak current of the bare gold electrode. The peak current measured by the modified gold electrode increases with the increase of the assembling time of the Au nanoparticles.