Nano technology is the branch that deals with the particles ranging from 1 to 100nm. Two approaches are basically adopted for the production of nano particles that is bottom-up and top-down approaches. There are three main methods physical method, chemical methods and biologically synthesis method. In recent years, a new route for the synthesis has received great attention due to its efficiency, less toxicity, safer and capability to design new route for manufacturing. Green synthesized particles at its nano scale range are commercially and economically very beneficial for the environment. This method uses a reducing agent that reduces the metal salt to form metal oxide. Current study shows that Trachyspermum ammi extract possess different phytochemicals (carbohydrates, thymol, steroids, flavonoids, terpenoids, saponins, anthroquinone and phenols) which reduces the metal salt to its metal oxide. Al 2 O 3 nanoparticles are chemically, ecologically and economically advantageous and provoke antimicrobial, inflammatory, antispasmodic, antiviral, antioxidant and many other properties. INTRODUCTION: