Purpose-Taiwan has a highly competitive department store market. In this market place a huge emphasis on service quality and word-of-mouth, due to the fact that these two aspects can be the determining in terms of overall repurchase intentions. There is a primary objective of this research. This study aims to empirically test the relationship between service quality and word-of-mouth in Shin Kong Mitsukoshi department store. Methodology-The proposed hypotheses were tested by collecting data from 562 Shin Kong Mitsukoshi customers. The collected data were tested using Descriptive Statistics, One-Way ANOVA, and Stepwise Regression. Findings-There are two primary findings of this study. First, According to this study result, it shows that different gender, years, and shopping frequency would have the remarkable difference with consumer word-of-mouth. Second, the findings indicate that service quality (assurance, responsiveness, and empathy) positively influenced word-of-mouth. Value-This paper contributes to research on department store by the development of a comprehensive framework for customer.