這篇論文主要利用信用價差的時間結構與信用投資組合的損失分配評價擔保債權憑證選擇權。利用跨期因子相關結構性模型找到信用價差的動態過程及損失分配跨期相關性。這篇論文也探討了擔保債權憑證選擇權的風險值。最後，我們發現遠期生效擔保債權憑證與其選擇權對跨期損失相關性有高度敏感性。 / This article tries to find the term-structure of credit spread and portfolio loss distribution to price an option on CDO tranche. Our solution is based on a multiple period of factor copula model proposed by Andersen to fit the dynamic credit spread process by considering inter-temporal loss correlations through time. We also extend the model of valuing European options on CDO tranches presented by Hull and White and discuss the Greeks of the option formula. We numerically test the dependence of forward-starting CDOs on the correlation of loss across time. With the results, we price the options on CDO tranches. Finally, we find forward-starting CDOs and options on CDO tranches can have strong sensitivity to inter-temporal loss correlation.