The aim of this study is to illustrate the causal relationship among product attributes, the consumer’s emotional state, and impulse purchase behavior. Product attributes, especially sales promotion, have a great influence on impulse purchase behavior. Thus, department store industry marketers could improve impulse purchase behavior and purchase intentions by encouraging sales promotion, including monetary promotion and non-monetary promotion. Specifically, the implementation of a sales promotion raises the customer’s level of the pleasure emotion. In turn, pleasure emotion strengthens the consumer’s impulse purchase behavior and purchase intention.