The interest in ubiquitous that is being rapidly introduced to the worldwide clothing fashion industry has played a crucial role in the small production of multiple grades, customer-oriented industrialization, cultural industrialization, high value added industrialization, and globalization. In addition, as there is growing demand for and interest in functional wear and smart design, the digital trend has developed a more advanced fashion industry that is appearing as a new domain along with the application of computers to fashion in the fashion industry. Therefore, as a study on the utilization of pattern systems that have developed in such a digital environment, this study is about system utilization that allows us to forecast in advance errors that might occur in the actual operation and to confirm the status of completion before completion by confirming the status of fitting in a 3D simulation procedure through a 3D pattern system. Therefore, the detailed objective of this study is to find characteristics of the 3D pattern system in the course of producing patterns and applying all procedures of clothing manufacturing focusing on the classification of figures of Korean women in their 20s, and to identify any problems in utilization that might appear in the course of the operation. Also, the study proposes matters to be improved in utilizing the system before the substantial distribution of the system in the industry by indicating errors and limitations found in the research procedure. The limitations identified in this study may be largely classified as follows. First, the problems may include the limitation in preparing a human body model. Second, there is a problem in the course of the wearing test in a virtual mock test, and the details may be summarized as follows. First, the problems lie in the imperfectness of preparing diverse human body models according to the failure of itemization of the organization system for preparing virtual human body models; second, there are limitations according to the organization of the human body, which is the same as the actual one owing to the failure to solve errors caused by the input of limited coefficients; and, third, there is the problem of preparing human body models owing to an accuracy problem with the limitations of the human body scanning method. Also, for the virtual mock test, the problems lie first in the difficulty of correction in wearing; second, the space and wrinkles in the pattern as well as the failure to perceive colors; and, third, the imperfectness of wearing information according to the standardization of the postures of the paramedic human body model. Furthermore, for correction of the system, there is a problem of inefficiency that causes a reverse circulation of work flow that needs to be improved with the Narciss system, and a follow-up study on this should be pursued. However, the problems of the 3D pattern system discovered in this research procedure are believed to be temporary ones that might appear in the early development stage, and they may be overcome together with technical errors in the future. Actually, the expected effects shown in the research results include the following. First, it is possible to confirm the practical details about finished products prior to the completion of the products by preparing patterns on a computer and visualizing them as 3D images. Second, this can reduce time and costs, and maximize efficiency in simple repetitive work that requires accuracy as the grading and marking of each pattern can be done easily. Third, many pattern designs can be organized and saved as well as the utilization of data for an applied model for new pattern designs. It would be possible to perform the practical operation of a 3D pattern system as a basis for opening a door to the upcoming itemized pattern era by developing cutting-edge technology, accumulating know-how about operation systems, and solving the limitations of operation cost; and, hopefully, this study will be meaningful for leading the provision of basic data in this regard.