The purpose of this study was to investigate whether there are some underlying constructs in the motivation of disseminating word-of-mouth for potential customers, in terms of positive and negative word-of-mouth. Consumers disseminate word-of-mouth because they have favorable or unfavorable experiences with products or services, and they need a channel to express their joy and anger. Motivation of spreading word-of-mouth has been discussed in many studies. However, all of the motivations aforementioned do not take specific circumstance into account. For example, in the restaurant business, what motivation will drive those potential customers to disseminate positive/negative word-of-mouth? The problem the researcher dealt with was investigating whether or not there are some underlying constructs in the formation of motivation for potential customers to disseminate word-of-mouth. By utilizing exploratory factor analysis (EFA), the result indicated a five-factor solution for both positive and negative motivations.