The study deals with a careful and objective study of subjectivity, trying to achieve a balance between them when practicing the interior design of multiple buildings, so that the design should not be subject to only the objective aspects, but must include the humanitarian motives that definitely affect his observation and his perception of things that significantly affect the output of the distinctive design for him. Here, the main research problem lies in the necessity of a fundamental difference between the objective side and the human phenomenon, and the research objectives are manifested in reaching firm design principles and criteria through which we can make internal designs according to a specific methodology. Thus, the limits of the research are two fundamental parts, namely, subjectivity and objectivity in order to achieve the benefit and success of the interior design of the space and the results of the research, it aims to reach a specific concept of subjectivity and determine the field of objectivity and its impact on the interior design, where the research tries to prove that in order for the work to be creative must take into account the self aspect Which is related to the designer, and the objective aspect that takes into account others, society and environmental conditions