The electrochemical behaviors and electrochemical kinetic of paeonol(PN) at 3-aminopropyltriethoxysilane and ［BnMIM］PF6 modified carbon paste electrode (APTS-［BnMIM］PF6/CPE) were investigated.The electrochemical kinetic parameters of PN at APTS ［BnMIM］PF6/CPE were determined by cyclic voltammetry(CV) and chronoamperometry(CA).The experimental results indicated that PN electrochemical behavior exhibits an irreversible electrochemical oxidation process at APTS-［BnMIM］PF6/CPE.The oxidation peak current of PN versus its concentration had a good linear relationship in the concentration ranges of 9.0×10-7-2.0×10-4 mol?L-1,3.0×10-4-1.5×10-3 mol?L-1 with a detection limit(LOD,S/N=3) of 3.5×10-8 mol?L-1 and a limit of quantitation(LOQ,S/N=10) of 1.2×10-7 mol?L-1.The proposed method was successfully applied in the determination of PN contents in injection samples with their relative standard deviations of 0.58%-2.4% and recoveries of 96.0%-102.0%.