Abstract: Nano-robots are an innovated and advanced field in which medical, biomedical, bio-methodological, technological, and other applied and basic sciences need scientific and technical expertise. Nano-robots vary, especially in their nano-sized structures, from macro related field robots. Montage and implementation of nano-robots are dependent on molecular nano-technologies and mechanosynthesis. Such systems are basically nanoelectromecanical devices capable of performing preprogrammed functions with preinstalled nano-motor/nano-machine, which is reliable and accurate. Nano-robots have exceptional prospects for medical, biomedical and drug applications because they are small and functional in large numbers. Although the artificial nano-robots cannot be built using any technology at present but it is possible now by using of biological methods allows the creation of nano-robots. The review is given that nano-robotics can be used in medical, biomedical and pharmaceutical studies.