In recent years, has been tremendous development in the field of nanotechnology. Nanotechnology is a scientific field of application and construction machinery and micro-level roaming agreements. Since the development of nanotechnology, there were many in the scientific development in all areas, especially in the field of medicine. With the help of nanotechnology, a complex heart surgery to achieve is possible. Doctors are already using nano-robots to treat certain diseases. These nano-robots will also help to correct certain diseases in the human body. Nanotechnology in Drug Development: Recently, scientists are developing better and effective drug delivery systems using nanotechnology. The scientists are using nanoparticles to create a drug-transit system, can improve the drug properties and therapeutic drugs to help improve the process, such as narcotics. Nanaoparticles significant performance, greatly improved medicines management. An event such as nano-technology transfer in the cytoplasm of drug through the cell membrane. This is an important advance because it will prevent the body from certain diseases, drugs have entered the cell membrane. Because in the body, which requires an effective drug molecules positive response. So scientists are using nanotechnology. Scientists are using nanotechnology developed drugs will automatically be activated once you enter the body. Many researchers believe that this is a drug delivery system can be developed, may prove to be on the treatment of cancer and infectious diseases, beneficial use of nanotechnology. There are so many drug delivery systems developed to the field in place, researchers believe, in the near future, nano-functional drugs will have a tremendous progress and truth produce nano-medicine.