本研究探討企業發行綠色債券後，對其資本結構所產生的影響。透過實證分
析發現槓桿比率與綠色債券發行呈現正向關係，顯示綠色債券作為一種新興的融資工具，與傳統普通債券具有互補性，而非相互替代的關係。我認為這個結果可以呼應到Tang and Zhang (2020)中所發現的結果，也就是綠色債券的融資成本並沒有低於一般傳統債券的融資成本，因此對於企業來說沒有使用綠色債券替代一般傳統債券的誘因。本研究亦分析綠色債券發行對企業股權比例的影響，在考慮國家固定效果後，兩者關係為正向。此結果支持Flammer (2020) 的觀點，即發行綠色債券能向市場傳遞正面訊號，改善企業形象並吸引更多 ESG 投資者的關注，因此會推動股價上漲並增加更多的持有程度。

This paper explores the impact of green bond issuance on a company's capital structure. Through empirical analysis, it is found that there is a positive relationship between leverage ratio and green bond issuance, indicating that green bonds, as an emerging financing tool, are complementary to traditional bonds rather than substitutive.
I believe this result aligns with the findings of Tang and Zhang (2020), which show that the financing costs of green bonds are not lower than those of traditional bonds.
Therefore, companies have no strong incentive to replace traditional bonds with green bonds. This paper also examines the impact of green bond issuance on a company's equity ratio. After considering country fixed effects, the relationship is found to be positive. This result supports the view of Flammer (2020), suggesting that the issuance
of green bonds can send a positive signal to the market, improve the company's image, and attract more attention from ESG investors. Consequently, it can drive stock prices
up and increase shareholding.

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