In the nature, calcium sulfate is found as gypsum (CaSO ,2H O) in nonconductor compound which converting to plaster by the effect of heat and water loss. Into the autoclave, under pressure Alpha & Beta will be formed of gypsum. In order to create conductivity properties in gypsum, a kind of polymer called poly-aniline has been used which due to environmental sustainability, color changing PH, relatively high electrical conduction and lower price, is preferred by many users. By mixing calcium sulfate with poly-aniline, conductive composite of poly-aniline – gypsum ( PANI – Gypsum ) will be formed. The composite was characterized by FTIR , NMR, UV spectroscopy and standard conductivity measurement. It has been shown that non conductive gypsum could be conducive if it combined with poly-aniline in a poly-aniline – gypsum composite form. By oxidation and reduction, its electrical conductivity could be controlled. Alpha and beta gypsum in vitro condition in combination with the above polymer has produced composite polymer which has electrical conductivity and it can be used in various chemical, military and in particular electronics industries.