High molecular weight polyaniline (PANI) was synthesized by adding neutral salt technique with MacDiarmid's method and the morphology of the obtained PANI was examined by the scanning electron microscope (SEM). A remarkable and special phenomenon has been found that the SEM images of resulting PANI show a mass of clews, the average diameter of which is about one micrometer. Furthermore, these honeycombed clews are tenuous, interconnected fibrillar network with characteristic cross-sectional fibril dimensions of a few tens of nanometers. In addition, various preparation parameters which will probably influence the morphology of the high molecular weight PANI in our investigation are: (a) the concentration of lithium chloride ([LiCl]); (b) reaction temperature (t); (c) molar ratio of aniline:oxidant ([An]/[APS]); (d) the concentration of aniline ([An]); (e) the concentration of hydrochloric acid ([HCl]). Some correlations between the sample preparation process and its morphology properties have been obtained.