隨著國民所得水準提高及工業化發展對環境所造成的嚴重污染，導致全民環保意識高漲，投資大眾越來越重視公司污染環境的情況，因此本研究主要目的：欲檢視近年來上市上櫃公司對於『證券發行人財務報告編製準則』規範所要求之環保支出資訊揭露的遵循狀況，藉由評估上市上櫃公司所發佈之年度財務報告附註中所作的環保資訊揭露，來探討公司環境揭露決策的決定因素是否會影響公司提供環保資訊揭露意願及揭露品質。
本研究以民國90年具有高污染產業之上市上櫃公司，包括水泥業、塑膠業、化學生技業、造紙業、與鋼鐵業共計107個樣本作為研究對象，並採用羅吉斯及最小平方法之研究方法來分析。
實證結果發現，在決定因素中，規模（以銷貨淨額為代理變數者）愈大、獲利能力愈高及與顧客關連度愈強烈的公司，公開透明度愈佳，愈積極從事環保支出的揭露，而且揭露品質愈高。而以員工人數作為公司規模的代理變數時，與公司環保揭露呈現反向關係，原因可能是台灣工會制度並沒有發揮嚴格監督的功能，公司員工人數愈多並沒有對公司造成提供環保資訊的壓力。
另外，負債比率愈高的公司，環保支出揭露情況及揭露品質愈差，但結果並不顯著，外部小股東持股比率與公司環保支出揭露情況及環保支出資訊揭露品質呈現反向關係，雖與預期方向相反，但並不顯著。原因可能為台灣公司的小股東大多都是散戶，對公司沒有實際監督能力，來自外部小股東的社會揭露需求壓力對公司並不造成威脅。此外，產業型態對環保支出揭露與否及環保支出資訊揭露品質呈現正向的關係，但不具顯著的影響。

This study examines some determinants of corporate decision on environmental disclosure and the quality of disclosure in Taiwan corporations. We use 5 high-polluted industries including 107 corporations listed Taiwan Stock Exchange corporation and OTC. Six explanatory factors with respect to environmental disclosure are extracted: company size、financial performance、strength of consumer relations、dependence on debt、dependence on the capital market and type of industry. Using Logit and OLS analysis to examine these determinants, the empirical results indicate that company size(net sales as proxy variable)、financial performance and strength of consumer relations have a significant positive influence on the environmental disclosure and quality of disclosure.

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