房屋貸款商品的選擇多樣化，房貸借款人想要用最低的成本攤還貸款而貸款的金融機構利用不同型態貸款商品的推出滿足不同的客戶使其利潤極大化。 有一種貸款商品的概念，藉由不同型態的設計吸引高風承受力及低風險承受力的借款，利用一些結構式商品設計的概念，將其每期利息支付重新連結到資本市場，利用不同參與率與分享比率的配置使其有機會提早還清貸款。 本文採用結構型商品的模型，利用極大值選擇權及蒙地卡羅等數值方法，模擬在不同商品契約下，未來可能提前清償還本的可能性。以此做為未來銀行等金融機構發行貸款商品時的參考方向。 / There are various types of mortgage products in the mortgage market. Borrowers always want to choose the best case to repay their mortgage loans, whereas lenders tend to maximize their profits by designing new mortgage products which seem to meet the needs of borrowers. Now we have a new design of mortgage products which can attract both high risk-bearing and low risk-bearing borrowers. In the first structure, the mortgage loan is in the form of a traditional fixed-rate mortgage loan with a mechanism which allows borrowers to re-invest their periodical interest payments into risky assets in the capital market. Therefore, borrowers can enjoy the chance to fully repay their mortgage loans if they gain profits in this mechanism. In contrast, borrowers could lose money if their re-investment amount suffers loss. In the second structure, like the fixed-rate mortgage loans, borrowers repay periodically based on the contract mortgage rates set in the initial time they borrow. What’s different is that we have a period where borrowers can accelerate their principal repayment if the asset pools have high rate of return. Besides, we do some scenario analysis based on the virtual contracts we set up and then discuss the potential effects on this mortgage product.