"The role of interior design in the quality of architectural design" Summary Christian Norberg-Schulze notes in his book Interior Designs in Architecture, "The theory should be based on empirical knowledge, but it is meant to help the creative architect plan, predict, compare, and critique."says Marco Antoine Laugier Buildings are designated to be habitable only because they are suitable," as they must be I r planning interior decoration in relation to the activities and lives in which they live, improving the function and quality of interior spaces can improve the quality of life, increases productivity, and protects the health, safety, and well-being of its occupants. the study Problem The main problem of the current study is the problem of complete separation that occurs when designing the inside and outside of any building, and a topic has been raised This study is due to the strong belief that the process of designing interior spaces is done in a different way to designing architecture, and that design The interior is part of architecture and not separate in itself. Architecture is more than the art of constructing buildings. The purpose of architecture is Giving order to our environment, this means that architecture controls or regulates the relationships between man and his environment Hence, the main problem with this The practice is to look inward and leave its consideration a step further by giving precedence to the building's luxurious image.This research will examine the extent to which architects and professionals form a philosophy of design that can be applied to architecture as a whole, including That's the interior design. It is an integral part of the structures that buildings usually contain, meaning that the design Interior designs are considered a part of the interior that is closely related to It is related to architecture and can only be studied in an architectural context where interior design faces many problems, as we find that the definition Many users of buildings or designers because the design The true interior design as an integral part of the building is not evident from the interior It has nothing to do with the concept and philosophy of architecture. On the other hand; The real participation of furniture suppliers and providers in designing Space without understanding design principles and selling their products is the goal that results in bad design. Another problem is the user and occupant of the property's interior space who seeks to beautify his home but lacks taste and understanding of theory Design and philosophical thinking that can be managed without professional guidance, as such people, and unfortunately some engineers, believe Architects, that a wonderful indoor place was designed if it is lit at the entrance, and there is a fireplace designed from beautiful stone with an arch parentheses, even the idea of patterns gets mixed up because the design is described as modern, classic, Victorian or rustic without knowing the doctrines of these movements. They also have the responsibility to publicize the issue as they are not working with an in-house designer during the design The architects are also responsible for any building to implement it.When designing the interior, the space is shaped by its functional needs so that it is The user of the drug is also an important factor It is designed so that the user can perform his activities and live comfortably, as it is supposed to have special specifications as follows: 1. The internal spaces of the rooms and apartments must form appropriate and appropriate spaces for the residents of the residential space, according to the evaluation of their activities, so that These spaces allow human life to be enhanced for them according to their functional needs. 2. Interior design has a significant impact on the human living environment and enhances the quality of the interior environment in an approach that improves the quality of life. 3. The lack of knowledge of design theory, philosophy and even education involved in the creation of interior spaces, as carpenters and painters can Homeowners, plumbing vendors, and furniture vendors contribute to the design of the interior, which can be the problems facing interior design Because of the personnel involved. 4. Architects do not work with an interior designer to create the interior space, but the interior design is done at a later stage by The tastes of users, attention to the relationship between the interior and the exterior during the design of any type of building can Interior designer according to N to produce architecture better. 5. Spreading awareness among architects and people of the true definition of interior design by looking inside each built space As a design generator it can produce a comfortable space for the user to occupy. 6. A good design is a design with a philosophy, and theory can help the architect plan, compare, predict, and critique. (iasj.net, 2023) the importance of studying:- Studying interior design, its evolution and change throughout history is a useful way to explore the past and make sense of the spaces in which life is lived This makes us successful in leading the interior design profession towards excellence by setting standards and accrediting academic programs suitable for her. And when we talk about interior design, both residential or commercial design raise concerns, hence the current study is interested in drawing attention To the need for a philosophy in designing interior designs and linking them to architecture, and what we notice is that most of the interior decorations Design is lacking with visions of philosophy, as the main difference between architecture and simple construction is the theory that always precedes the construction and describes desired result from it. Hence the importance of the study in clarifying the importance of designing the interior spaces of residential, commercial or other buildings in the quality of design The architect through coordination and agreement between the interior designer and the engineers who design and build the building and the owners of the building And who will occupy the building functionally later Objectives of the study:- The main objective of this research is to form a theoretical base for future studies and practices by focusing on interior design As an integral part of the building, by spreading awareness of the true meaning of interior design and its relationship to architecture and focusing on the importance of interior design Philosophical insight, where a good interior design can produce better architecture and a building that has unity between the inside and the outside. Terminology of study:- Sometimes used incorrectly, the term began The terms interior design and interior decoration are relatively new terms Interior decoration which was first cataloged as a dictionary entry in 1867, was followed by the term interior design in 1927 Interior Design Concept: Interior design is defined as: "The art or practice of planning and supervising the design and implementation of interior designs and furnishings."Interior design is also defined as "the schematic design of human-made spaces for the purpose of living in them, and it is part of architecture."We find that the design theory has historically emphasized the design of external buildings and not the design of the interior, as we find that the history of architecture has been dealt with With pictures of the outside building only and not from the inside, we also find that the great buildings of the past lacked interior designs Brilliant, even though we spend most of our time at home, we are surrounded by interior decor.In his book Human Inquiries in Architecture, Elias Cornell posits three principles of architectural creativity: outer space Enclosed, interiors, exteriors, and to define interiors we need to define outer space and decorations external.key words:- Interior design, architectural design, area, place, quality, architecture, Introduction:- Man lives his daily life to a large extent in interior spaces, regardless of their description and vital functions Our time is in homes, offices, stores, restaurants, schools, hospitals...etc.Although we love the outdoors and lively life, in Outside we are exposed to the extremes of nature, whether it is a rural, mountainous, desert or urban wilderness, and without this exposure; It will be an experiment Humanity is incomplete.Architects actually understand the importance of design.