The article discusses the subject area of social psychology of communication: how social and interpersonal relationships are realised. Two important issues on which social psychology focuses are raised. The importance of the interactive side of communication is noted. The necessity of the communicative side of communication in the course of joint activities is noted. Some questions are raised about the place of communication in the whole complex system of human connection with the outside world. The essence of the ontological and epistemological model of communication is also revealed