Professional knowledge-interior designers must know what effects various designs will bring, such as mechanical effects of different shapes, practical effects, ergonomics involved, costs and processing methods, etc. This knowledge can never be mastered in one day, but also integrated and comprehensively applied.

Creativity-rich imagination, innovative ability and foresight are essential, which is a big difference between interior designers and engineers. Engineering design adopts calculation method or analogy method, and the nature of work is mainly improvement, perfection rather than innovation; Modeling design attaches great importance to originality and originality. Design elements are endless lines and surfaces, not rigorous and tedious data. Analogical modeling design can't be excellent.

Artistic skills-in short, the level of painting, and further, the level of aesthetics and aesthetics. To be sure, there is no interior designer who can't draw, and it goes without saying that "drawing is the language of designers". Although there are other ways to express design (such as computers), pen and paper painting is still the simplest, direct and quick method. In fact, although ideas can be expressed more comprehensively through computers and models, most of the most important imagination and deliberation processes are carried out through simple paper and pencil.

Design skills-including the manual production of sludge model and the application ability of computer design software. Of course, these skills need professional training, and there is no natural craftsman, but strong hands-on ability is a must.

Job skills-coordination and communication skills. This involves the category of management, but because design plays a decisive guiding role in the whole product image, technology and production, good coordination and communication can ensure the efficiency and effect of design. This is an additional requirement for modern interior designers.

Market awareness-production (cost) and market (customer's taste, cultural background, environmental climate, etc. ) must be considered in the design. Designs that are out of the market can't be sold, and so can interior designers.

Responsibilities-Designers should know as much as possible about the occupation, preferences, use functions and styles pursued by customers through consultation with customers and on-site investigation.