In the past quarter century,conducting polymers have attracted great attention due to their important academic interest and industrial applications.Electrochemical polymerization has been proved to be one of the most useful approaches for conducting polymer synthesis with several advantages.First,one-step conducting film can be formed on the working electrode.Second,the amount of polymer deposited on the electrode can be controlled by the integrated charge passed through the cell.Third,only small amounts of monomer are required.Last,electrochemical studies can give fast information on the characteristics and properties of electropolymerized materials with good accuracy and precision.The choice of electrolyte is very crucial for preparing high quality conducting polymers.However,boron trifluoride diethyl etherate (BFEE) solution is a middle strong Lewis acid together with good ionic conductivity and good electrocatalytic properties.When BFEE is used as the solvent,no supporting electrolyte is needed.The complexation of aromatic monomers such as thiophene and its derivatives,benzene,pyrrole,furan,fused ring aromatic compounds,with BFEE can markedly lower the anodic oxidation potentials of the monomers,which is beneficial to the preparation of high quality conducting polymers.The resulting aromatic conducting polymer films show improved mechanical properties and conductivities.For this sake,many efforts have been focused on the electrochemical polymerization during the past decade in pure BFEE and its mixed electrolytes with strong acids such as trifluoroacetic acid or concentrated sulfuric acid,diethyl ether,alcohol,dichloromethane,acetonitrile or THF.Up to now,a series of high quality inherently conducting polymers have been produced from these media.Here,the electrochemical polymerization of high quality conducting polymers (and micro/nano-materials) prepared from BFEE and its mixed electrolytes by low potential electrochemical methods were introduced in detail.