Korea''s elevator industry has grown to the third largest in the world in terms of annual installed capacity, and has become a nationally important industry. The role of the elevator is to be able to maximize the function of the building by facilitating the movement of the resident population of the building by means of transportation within the building. According to the data of the National Statistical Office, 48.6% of Korea residents live in apartments. As the buildings continue to grow in size and height, the importance of elevators is growing day by day. As of the end of 2018, there are 683,641 elevators in Korea, and about 70% of these elevators are under 15 floors. It means that the market is widely open to small and medium-sized companies. However, at the most important business stage of the entire work flow, industry practice and inefficient operation make it difficult for the company to easily gain competitive edge. To solve these problems and to enhance the competitiveness of SMEs in the elevator industry, we will analyze the current work flow and seek ways to improve efficiency through comparison with large companies. In addition, we will use the previous research in the study of efficiency improvement by examining from the viewpoint of automatic design, work efficiency and business design. Through this, we will develope the automatic determination program of the elevator specification and the program that automatically constructs the layout plan, so as to enhance the competitiveness by improving the work efficiency. In addition, we present a component''s relationship chart that allows each company to automate a component diagram (BOM) that are highly confidential and external to the company, and it is possible to construct an integrated operation model of sales design to improve the efficiency of the elevator industry to enhance competitiveness of SMEs.