The characteristics of interior design The relationship between interior design and architectural design is extremely close and mutual penetration. Generally, architectural design is the premise of interior design, just as urban planning and urban design are the premise of single building design. Interior design and architectural design have a lot in common, that is, they should consider the requirements of material and spiritual functions, follow the principles of architectural aesthetics, and are subject to the constraints of material technology and economic conditions. As a relatively new discipline, interior design also has the following characteristics: 1. It has a more direct and close impact on people's body and mind. Because people spend most of their life indoors, the quality of the indoor environment must directly affect people's safety, health, efficiency and comfort, the size and shape of the indoor space, the linear pattern of the indoor interface, etc, It will give people a strong sense of long time and close distance physically and psychologically, and even can touch and touch the interior furniture, equipment, walls, floors and other interfaces. Therefore, it is natural to require more in-depth and careful interior design, more from the perspective of benefiting people's physical and mental health and comfort.