In my final thesis the concept of public relations will be explained, which are the underlying public relations activities and various public relations theories. Namely, for public relations can be told that they deal with building relationships and creating a good reputation of the organization in public. In the second part of the paper, focus is on strategic relationships, a more accurate way of communicating managers, and communicating within a corporation, that is, an organization. In each organization, senior management has a role in creating a vision and directing the organization in the right direction to achieving the goals set. The vision may be general or specialized. Any strategy to choose, it involves a lot of analysis, information and decision-making. In the third part of this paper, public relations models have been explained, which enable a better understanding of this profession. Grunig - Hunt's public relations models that will be discussed are the most relevant to model analysis. These four models serve as a framework for monitoring the values and goals of an organization when organizations practice public relations. When an organization solves a particular problem, a dominant coalition needs to choose a particular model for resolution. The model is chosen based on the model's compatibility with the organizational culture and whether the public relations manager has enough experience to implement the model.