In　this　paper,　a　novel　molecularly　imprinted　electrochemical　sensor　was　developed　for　the　determination　of　bisphenol　A　(BPA).　Au　nanoparticles　(AuNPs)　were　modified　onto　the　surface　of　a　glassy　carbon　electrode　(GCE)　by　electrodeposition　method.　BPA　was　used　as　the　template　molecule,　while　4-aminothiophenol　(4　ATP)　and　chitosan　(CS)　were　used　as　the　binary　functional　monomers.　After　4-ATP　was　modified　on　the　AuNPs　by　self-assembly,　electropolymerization　was　carried　out　by　cyclic　voltammetry　(CV)　in　the　presence　of　CS　and　BPA　to　produce　molecularly　imprinted　polymers　(MIPs).　The　prepared　sensor　was　denoted　as　MIPs/AuNPs/GCE.　The　morphologies　of　the　electrodes　were　characterized　by　scanning　electron　microscopy　(SEM).　The　MIPs　were　characterized　by　Fourier　transform　infrared　spectroscopy　(FT-IR).　The　electrochemical　performance　of　the　imprinted　electrochemical　sensor　was　investigated　by　cyclic　voltammetry　and　electrochemical　impedance　analysis　(EIS)　techniques　in　detail.　The　experimental　results　showed　that　the　gold　nanoparticles　could　increase　the　conductivity　of　the　MIPs　significantly.　The　imprinted　electrochemical　sensor　was　successfully　applied　to　determine　BPA　by　linear　scan　voltammetry　(ISV).　Under　the　optimal　condition,　the　oxidation　peak　currents　of　BPA　exhibit　a　well　linear　relationship　toward　the　BPA　concentrations　in　the　range　from　1.5　x　10(-8)　mol　L-1　to　5.5　x　10(-8)　mol　L-1,　with　a　detection　limit　of　1.1　x　10(-8)　mol　(S/N　=　3)　and　a　correlation　coefficient　of　0.9996.　The　sensor　possesses　good　stability,　selectivity　and　high　sensitivity　to　BPA,　which　was　successfully　applied　to　detect　BPA　in　actual　samples　such　as　plastic　and　milk.　The　recoveries　were　in　the　range　of　97.6-106.5%.　(C)　2017　Elsevier　B.V.　All　rights　reserved.