A new aromatic all-para oriented poly( amide hydrazide) containing an azo group in the main chain was prepared by reacting a symmetric diamine containing a preformed hydrazide group, viz., N,N’-bis(4-aminobenzoyl)hydrazine (BABH), with 4,4’-azobenzoyl chloride (ADBC). The thermal behavior of the polymer was studied by TGA and DSC in air and nitrogen. Films of the polymer were prepared by two processes, viz., wet and dry processes, by using its solution in DMAc containing LiCl. The optical anisotropy, surface morphology, and tensile properties of the films were studied.