Healthcare-Associated Infections remains an important source of morbidity and mortality, with an estimated 1.7 million infections and 0.1 million deaths annually. The major source of nosocomial pathogens is thought to be patient?s endogenous flora but an estimated 20%-40% of health care personnel. Contamination of the hands of healthcare personnel could in turn result directly from patient contact or indirectly from touching contaminated environmental surfaces. The risk associated with hospital& community acquired infection are enormous for both human health and medical costs. Scientific literature confirms that clostridiumdifficile, MRSA(Methicillin-Resistant Staphylococcus Aureus), VRE(Vancomycin -Resistant Enterococci), acinetobacter baumannii, and influenza are transmitted via environmental surfaces . Published studies indicate that only 50% of environmental surface cleaning. Thus patient?s risk of contacting an HAI(Healthcare-Associated Infection) increases 100% when the previous room occupant had been diagnosed with an infection. So we proposed a system to disinfect the bacteria by using robot.