Principle purpose of this lecture is to presentation on Environment of Marketing Channels. The Environment is Consists of all external uncontrollable factors within which marketing channels exist. This article briefly explain on Technological Environment, Legal Environment, Sociocultural Developments. Finally analysis on Legal Issues in Channel Management, here discuss on Exclusive Dealing, Full-Line Forcing, Price Discrimination, Price Maintenance, Refusal to Deal, Resale Restrictions, Tying Agreements and Vertical Integration.