The purpose of the existence of tourist agencies is their work in tourism, ie planning, organizing, selling and realization of tourist trips, as well as providing services necessary for the development of tourist traffic. The emergence of travel agencies is associated with an increased desire to travel by tourists. The increase in tourist traffic leads to the creation of organizations specialized in providing information and services necessary for tourist travel. We are recording a constant growth of tourism, which activates many other sectors of the economy, which is its extremely important role. By creating new and upgrading existing tourist agencies, it seeks to contribute to the complete development of tourism. The dynamism and uncertainty of the environment affects the change or adjustment of the travel agency by accepting new challenges from the environment. By introducing changes in their business, travel agencies show a willingness to adapt. The emphasis is on functions, because it is through their specialization and upgrading that travel agencies successfully survive and compete in the market. As an intermediary, the agency has an extremely important role in connecting the tourist offer and the tourist demand. By informing and advising clients through promotional materials and other forms, the travel agency manages to successfully organize a travel arrangement on behalf of tourists. The treatment of this topic enables a better understanding of travel agencies as well as an understanding of the very essence of their existence.