It is estimated that out of approximately one million recorded insect species, less than 1000 species are actually pests which transmit diseases and damage crops. They are important part of food chains of many invertebrates, birds, reptiles, amphibians, fishes and even mammals. They are also important in survival of insect pollinated flowering plants. Insects plays variety of roles in nature like pollinators, predators of pests, parasitoids of pests, weed killers, scavengers, decomposers, soil builders, food provider etc. insect are also useful in medicines and have aesthetic as well as scientific values. Currently beneficial insects are widely used in integrative pest management (IPM) and integrative crop management (ICM). Out of million insect species currently we are using only a few insect species for our benefits but I think the scope of insects in welfare of mankind is enormous and we must look in this direction. We must think how we can get more and sustainable benefit from these millions of insect species.