Abstract: Cu-MOF and MWCNTs were synthesized by solvothermal method，and then Cu-MOF/MWCNTs composites were prepared，which was dropped onto the electrode surface，and the electrochemical behavior of POP on the Cu-MOF/MWCNTs modified electrode was studied by cyclic voltammetry （CV）. Experimental results showed that the electrode modified with Cu-MOF/MWCNTs had obvious electrocatalytic activity for p- （Tert-octyl） phenol （POP）. The reaction of POP on the electrode was controlled by adsorption. The oxidation peak current had a good linear relationship with the concentration of POP in the range of 1-50 μmol/L with a detection limit of 9. 51×10^-7 mol/L（S/N = 3），ΔI = -7. 965 82 - 0. 898 21C （R² = 0. 997 1）. Using this analytical method to detect samples of disposable polystyrene plastic lunch boxes，the average recovery of POP was 98. 9%-100. 4%，and the relative standard deviation of the measured values（n = 6） was 3. 02%-4. 00%.

Key words: Cu-MOF, MWCNTs, p-（Tert-octyl）phenol, electrochemical modification