At world level population-development-environment relationship has great environmental significance. Population, environment and development are inseparable. Resources, both physical and human create the physical as well as cultural environment. Physical environment provides the essential survival elements to human population as well as to the world community. Cultural environment, prepared by us determines the existence of other population groups. Population size, generally determined by the environment influences the environment again. Population and environment maintain their coexistence by feedback process. Development refers to the social upliftment. This trio-relation has created great debate from last few decades. Scholars are made attempt to solve the controversy and try to come in conclusion. Literature survey has been made to give light on this relation.