Bio-rational insecticides have been introduced to control insect pests since chemical insecticides are highly toxic to living organisms and to the environment. Bio-rational insecticides have low toxic effect or no toxic effect to plant,as it is the prerequisite to control insect pest by different bio-rational approaches rather than conventional insecticide and to give emphasize on bio-rational approaches. Again, the chemical ones are adversely affected the natural enemies as wellas human beings. The resistance developed against the conventional chemicals surge for the approach towards the bio-rational insecticides. A diversity of new botanical insecticides with special activity on insect pests is in the process of development as well as their importance are very much high to control effectively insect pests of Brinjal.