Eleotroohemioal method in combination with other techniques has been used to elnoidate the anodio oxidation pathways of oarbazole and a series of its derivatives, such as N-alkyl, N-vinyl, N-allyl, N-benzyl oarbazoles and some dioarbazyls. On the basis of experimental results, the following conclusions have been drawn:(1) The meohaniam of anodio oxidation of oarbazole has been found to be ECEC. The produot of oxidation is a oross-linked polymer of dioarbazyl, formed by 9-9' and 3-3' couplings whioh deposits on the electrode.