ZnO/polyaniline (PANI) composites were synthesized by a facile and one-pot procedure using zinc salts and aniline monomers as raw materials with aqueous chemical method.The chemical bonding established between ZnO and PANI, was confirmed by FTIR.From SEM observation, ZnO nanosheets and monodisperse PANI microspheres are distributed uniformly.The XRD patterns and high resolution TEM studies show the wurtzite structure of ZnO is well maintained after the impregnation of PANI.Thermal property of the as-prepared sample was studied using TG/DTA analysis.