In recent years, due to the rise of social media, brands are increasingly concerned about how to leave a positive impression on their customers online, which is why the concept of social currency has entered the public eye. Brand attachment and brand association have been widely studied by scholars as important factors affecting brand equity. In previous studies, we have learned that social currency can drive brand equity, but nothing is known about the effects of brand attachment and brand association on social currency. To summarize, the purpose of this study is to investigate the effect of brand attachment and brand attachment on social currency. The target population of this study was people in R.O.C., and 444 valid sample questionnaires were collected. The results were confirmed as follows: i. Brand attachment has a significant positive effect on brand association; ii. Brand association has a significant positive effect on social currency.