Administration as human activity, mostly refers to the behaviors of people in administration. What is their role, forms of interpersonal cooperation, filling jobs, their mutual communication, supervision and procedures in the administration, etc. When all these elements are processed, a clear picture of administration as human activity is made. The main analytical instrument for researching people's behavior in administrative organizations is the social or organizational role. And with their help, the paper will easily analyze the behavior of people in the administration and their source of behavior. So, the purpose of the paper refers to all of the above, and the paper will go through: the framework of human activity, organizational structure of administration, people in administration, planning in administration, leadership in administration, communications in administration, supervision in administration and theoretical models of administration.