A white electroluminescent polymer having a 3,3-bicarbazyl group incorporated into a polymeric main chain of polyarylene, represented by the Formula 1: ##STR1##

in which Ar is an aromatic group having 6 to 26 carbon atoms, or a heteroaromatic group having 4 to 14 carbon, in which the aromatic group may be substituted with alkyl group, alkoxy group or amine group, each having 1 to 12 carbon atoms; R is a hydrogen atom, linear, branched or cyclic alkyl group having 1 to 12 carbon atoms, or an aromatic group having 6 to 14 carbon atoms, in which the aromatic group may be substituted with alkyl group, alkoxy group or amine group, each having 1 to 12 carbon atoms; and m and n may be the same or different, and satisfy the following relationships 0.1m/(m+n)0.9 and 0.1n/(m+n)0.9. The present inventive white electroluminescent polymer is capable of overcoming the limits of conventional polymer blending systems.