近年來,全球對企業社會責任(corporate social responsibility,CSR)的關注不斷增加。這一趨勢促使研究者開始探討企業社會責任績效及其內涵與企業社會責任揭露之關聯。本研究探討 CSR 環境績效以及企業的環境敏感程度對 CSR 報告書環境段落揭露量之影響。本研究以 2018 年至 2020 年有出版 CSR 報告書之上市及上櫃企業且報告書撰寫框架採用 GRI Standards 之公司為研究對象,共計1,366 筆觀察值,實證結果顯示,企業之永續績效越高,其 CSR 報告書傾向揭露更多相關資訊,以凸顯其優秀的表現,將自身的表現與競爭者做區分。另外,企業的環境敏感程度越高,其 CSR 報告書中環境揭露量也會越多,代表對環境敏感度較高之企業通常會受到更嚴格的審視與監督,並且為了要符合法規,必須要揭露更多的資訊凸顯自身的合法性。;In recent years, there has been a growing global concern for Corporate Social Responsibility (CSR). This trend has prompted researchers to explore the relationship between CSR performance and disclosure. This study examines the impact of CSR environmental performance on the disclosure of environmental-related sections in CSR reports, as well as the influence of corporate environmental sensitivity on the disclosure of environmental sections in CSR reports. The study focuses on listed and over-the-counter companies that published sustainability reports using the GRI Standards framework from 2018 to 2020, for a total of 1,366 observations. The empirical results reveal that companies with higher sustainability performance tend to disclose more relevant information in their CSR reports, highlighting their excellent performance and distinguishing themselves from competitors. Additionally, companies with higher environmental sensitivity have a higher level of environmental disclosure in their CSR reports. This suggests that environmentally sensitive companies are subject to stricter scrutiny and supervision, and they need to disclose more information to demonstrate their compliance with regulations and emphasize their legitimacy.