Insects are found in a variety of environmental conditions and occupy little more than two-thirds of the known species of animals in the world. Traditional pest management tactics used in plant protection are insufficient, and synthetic pesticides are costly and have adverse effects on human and environment. A brilliant approach to pest control is using nanoparticles to help reduce the application of synthetic pesticides and environmental pollution, therefore providing green and efficient alternative approaches for pest control in plant protection by the help of nanotechnology without harming the environment. Nowadays, biosynthesis of nanoparticles by microorganisms and plants is being efficiently used in plant protection.