The foundation of marketing policy of a firm is realized through a thorough analysis progress of diverse components of exterior environment and especially of the market. The creation of a monitoring system of market development is a necessity in order to stress the unstable character of the environment in which the firm functions. The system consists of a number of indicators continually supervised or supervised at certain time intervals. Its aim is to create a complete picture of modification tendencies of some market components that is of great importance to the firm is activity.