In this paper,an rGO-AuNPs modified GCE was constructed by the single step electrochemistry reduction method.The microstructure of different modified layers was characterized by transmission electron microscopy（TEM）. Electrochemical impedance spectroscopy and cyclic voltammetry were utilized to instruct the different complex modified GCE,and the data obtained illustrate the excellent performance of the rGO-AuNPs modified GCE.Besides,pH value of electrolyte and the per-enrichment time of PCP were optimized,pH 6.0 PBS buffer and 6 min of pre-enrichment time were used for the following experiments.Based on this,a PCP detection method with high sensitivity,selectivity,stablity and low detection limit was construced.The linear range of PCP ranged from 2.0×10-9 mol/L to 3.0×10-8 mol/L with a limit of detection（LOD） of 1.0×10-9 mol/L.The method was successfully employed to detect PCP in three kinds of wood samples and textile samples.The results showed that the average recoveries ranged from 89.0% to 96.5% with RSDs not more than 4.0%.The above experiments showed that the method is reliable and could be used for the determination of PCP in the wood samples and textile samples.