A novel carbon nano tube anti-bacteria coating is prepared from, by mass, 85% of environment-friendly coating, 5% of carbon nano tubes, 3% of polypeptide molecules and 7% of infrared absorber. The novel carbon nano tube anti-bacteria coating overcomes the defect of a coating prepared with the traditional preparing process that the antibacterial effect can not be realized, and exploits a new coating field. The application range of carbon nano tubes is widened, damage to the lung and skin of people is reduced, and harm to people and future caused by abuse of antibiotics is reduced on the premise that the antibacterial effect is realized; by means of the special components and preparing method, harm of toxic substances to people is reduced greatly, and coexistence between people and the environment is harmonized on the premise that energy is saved and the environment is protected. The novel carbon nano tube anti-bacteria coating can be widely applied to hospitals, families and other places with lots of people, such as building handrails, doors and windows and cooling fins where bacteria thrive easily.