This is a NANO Carbon ink that is very excellent in electrical conductivity and heat one as a product highly dispersing retreated NWNT (Multi-walled Carbon Nanotube) to Eco-friendly solvents by specific methods. This product is more excellent than thermal inks based on carbon pastes applied to existing heating films, and improved adhesive force with machines through stable dispersing treatments, and thus there are not fire risks owing to electric spark's occurrences. Also, various product manufacturing is possible by various printing methods such as gravure, silk screen, offset, and dipping etc because it is available by implementing resistance value and viscosity, and this product can be applied to various fields such as lodging house' s heating and melting snow, agricultural product¡¯s drying stands, thermal picture frames, thermal waistcoat, and thermal shoes.