The morphology of the self-assembly of poly(aniline-co-anthranilic acid) copolymers (PAAA) and poly (N-vinypyrrolidone) (PVP) into particles in DMF/H2O solution and fibers in sodium hydroxide solution was studied. Not only the solvent but also the content of PVP affected the morphology significantly. When the content of PVP is zero, no fibers were formed. With the increasing of the content of PVP, more and more fiber junctions appeared.