Nanotechnology is going to revolutionize the world. According to the National Nanotechnology Initiative (NNI), nanotechnology refers to the study of all particles in the range of 100 nanometers or less. One of the most important advantages of the smaller particle size is the ratio of surface atoms or molecules to the total number increases. That means they have large surface areas that lead to increase in surface activity and produce changes in their physical properties and biological properties. In the pharma-world, the applications of nanotechnology mean drugs containing nano-sized active ingredients. They are well used to cure HIV, Cancer and other harmful diseases; they can restore lost tissue at the cellular level, useful for monitoring, diagnosing and fighting sickness. The smaller drug delivery systems permit the deposition of medications in previously inaccessible areas of the body; it also has great importance in the treatment and diagnosis of certain diseases like cancer. A recent discovery in the field of drug delivery is target therapy, which improves the diagnostic tests and medical devices. INTRODUCTION: Nanotechnology is a combination of chemistry, physics, materials science, and biology, to bring together the required collective expertise needed to develop these novel technologies 1. Nanorobots are mainly the nanodevices that are used for providing protection or treatment against pathogens in humans. They are designed to perform a particular task or sometimes tasks with precision at nanoscale dimensions of 1-100 nm 2. They are expected to work at atomic, molecular, and cellular levels in both medical and industrial fields.