The volume of the Internet shopping mall business has made great increase over the recent years. In this paper, we study the interface of Internet shopping malls and its determinants in terms of customer satisfaction. Chapter 2 shows the trade volume and market status of domestic electronic commerce. Chapter 3 explains some basic terminologies such as usability, user interface. In the latter part of the chapter, we review and analyze famous overseas/domestic web assessment models, which are Selz & Schubert WA model, The Webby Awards, KMA's Internet Commerce Award and NCA(National Computerization Agency) report. Based on the study results so far, Chapter 4 introduces a new assessment model truly customized on the Internet shopping malls. In Chapter 5, as a means of application of our model to an actual shopping mall, we analyze the weaknesses and strengths of LGeShop based on the standards which our new model suggests.