This paper mainly focuses on the consumer behavior theory, and conduct deep study related to different concepts of this theory. In other words, this paper explores the origin of the focus of the consumer in marketing. Consumer behavior is considered as study related to the process which involves those situations when individuals or groups choose, buy, use, and dispose any product or service for the purpose of satisfying their needs and desires. Recent years witnessed major changes in the structure of forecourt, and 2005 is considered as that year in which revolution of shopper’s perception initiated in context of forecourt. This paper defines the consumer behavior in context of Forecourts and also highlights different aspects of this theory.