| In the field of architecture design, scale refers to not only the size relationship between construction and human but also the size relationship between parts .As one of the important elements of beauty in form, scale has been widely used in the design practice. In the design of commerce space, the scale satisfies not only the basic function requirements of people for the space in physical aspect, but also aesthetic requirements that people continuously enhance for the space quality in spirit aspect. In the design of commerce space, the scale satisfies not only the basic function requirements of people for the space in physical aspect, but also aesthetic requirements that people continuously enhance for the space quality in spirit aspect.Under the market economy condition, the value of the scale in the interior design makes the commerce space more and more comfortable, individual, artistic, so the economy benefit gradually increases. With the commerce activity incessant abundance, commerce space not only incarnates physical life level of the city, but also is the explicit embodiment of the consumption culture, and is the embodiment of all the world of the spirit visage. The scale as the rational guidance makes commerce space not only be the design of physics environment, space environment, vision environment, but also be the design of mentality environment, culture environment. Therefore, it's a valuable topic to discuss how to effectively use the scale element to create humanistic commerce space.This article takes the interior commercial space as a carrier, takes the visual scale as the emphasis point, and combine with the psychology and the physical scale, then study on how to improve a relational spatial scale system of interior space. Firstly it adequately generalizes the backdrop, intention, significance, actuality and direction of the domestic and overseas. Then it imbibes environmental psychology,behavioristics,human engineering and discuses the scale by multi-disciplinary,multi-angles as theory basic of supervising scale study. By analyzing a large number of domestic and foreign outstanding examples on scale design, the issue of scale is systematically summarized. Tentatively it is established a scale system that includes the design principles, and the relationship between elements of the psychological needs and the elements of the visual, scale levels and several methods of design. Finally, with the field work of several commerce spaces, it makes essential supplements to the above theory system, in order to make the worth of the thesis to be validated in the practice. The paper brings forward new viewpoint of scale in psychological aspect, and makes certain supplements to the actuality that the study on the scale just in esthetics and physics aspect in our country at present. |