Bisphenol A（BPA） is an endocrine disrupting substance commonly used in the manufacture of plastics，which is harmful to human health．In this paper，an electrochemical sensor based on polydopamine-coated zirconium-based metalorganic framework（Zr－MOF－PDA） was constructed to detect BPA．Under the alkaline conditions，the Zr－MOF－PDA composite was synthesized with Zr－MOF（4-carboxyphenylporphyrin as the ligand） as the supporter material and dopamine as the monomer．The composite was characterized by infrared spectroscopy，thermogravimetric analysis and scanning electron microscopy，and then modified onto the surface of glassy carbon electrode（GCE） for the determination of BPA．The electrochemical behaviors of the modified electrodes were investigated by cyclic voltammetry，chronocoulometry and differential pulse voltammetry．The cyclic voltammetry oxidation peak current values of Zr－MOF－PDA/GCE，Zr－MOF/GCE and bare GCE were 107.3，93.28 and 77.51 μA，respectively，and their electrode effective surface areas were 0.514，0.667 and 0.467 cm,2,，respectively．The experimental results showed that the Zr－MOF－PDA/GCE had a good conductivity and a large effective surface area．The differential pulse voltammetry response current of the Zr－MOF－PDA/GCE for BPA were 1.6，2.0 and 2.8 times of those of PDA/GCE，Zr－MOF/GCE and bare GCE，respectively．The Zr－MOF as a carrier material had an excellent conductivity and a large specific surface area．PDA contained a large amount of amine and catechol groups．Therefore，the Zr－MOF－PDA exhibited a high adsorption capability for BPA due to the hydrogen-bond interaction between Zr－MOF－PDA and BPA，which improved the detection sensitivity of the BPA electrochemical sensor．The electrochemical detection conditions were also studied，and the optimal conditions were as follows：concentration of Zr－MOF－PDA：3 mg/mL，adsorption time：6 min，and pH value of the phosphate buffer：9.0．Under the optimal conditions，the Zr－MOF－PDA/GCE showed a good linear relationship for the detection of BPA in the range of 0.01－1.4 μmol/L，and the linear regression equation was ,I,（μA）, = ,0.283 9, C,（μmol/L）, + ,0.02（,r,2,= 0.993 6）．The detection limit（,S/N ,= 3） for BPA was 0.004 μmol/L．With good selectivity，stability and reusability，the proposed method was successfully used in the detection of BPA in river water，milk and plastic bottles．The recoveries ranged from 98.4% to 103%，with relative standard deviations（RSD） of 3.4%－4.4%.