Principle objective of this lecture is to present on Methods of Conservation of Resources. Material substitution: Holding materials : Plastic cups = Paper cups; Plastic plates = Palm plates. Energy usage: Atomic energy = Solar energy; so that water and Uranium consumption is reduced. Product life extension; Durability of a product is extended for long years. here also briefly describe on Conservation of energy, Conservation of water, Conservation of soil, Conservation of food resources, Conservation of forest etc.