Recently, the use of nano materials have a great applications in many industries such as electronic. One of these nano materials be named carbon nanotube (CNT). CNT have a great thermal and electrical properties. Because of unique features of CNT, the use of CNT attract researcher’s attention. Process of coating involves application of thin film of functional material to a substrate. So in this paper we have a study and discuss about researcher’s results base on the use of CNT for coating the substrates.