CSR activities are a risk-averse strategy valued by firms, which they may create a good image through the engagement of them. Based on the catering effect, this study aims to explore whether firms are passively engaging in CSR activities due to investor sentiment and whether corporate governance could moderate the relation. The sample of this study covers listed companies in Taiwan Stock Exchange from 2007 to 2018. The empirical results show that the influence of investor sentiment on the engagement of CSR activities is negative, while corporate governance has a positive moderating effect. The findings support that the firm's engagement of CSR activities will be affected by investor sentiment. When the investor sentiment is lower, the firm tends to adopt more CSR activities. However, firms with more sound corporate governance help mitigate investor sentiment on CSR activities.