There are two ways for enterprises to raise funds from outside: one is to issue company shares; The second is borrowing. If the enterprise needs a huge amount of money and takes a long time to borrow, it will raise funds in the form of social debt. As an intermediary between creditors and debtors, trust companies are mainly responsible for keeping collateral, followed by handling relevant procedures and assisting in issuing. Important business types of trust companies. Under the framework of trust laws and regulations such as Trust Law and Measures for the Administration of Trust Companies, the trust industry in China will enter a new era of standardized development. According to the trust principle, it is a very important task to develop various trust products that meet the market demand. Corporate bond trust is objective and steady, avoiding the risk of issuing corporate bonds solely by credit in history. Corporate bond trust is conducive to expanding the market's understanding and trust in the trust industry and establishing a new image of the trust industry. In the design of specific corporate bond trust varieties, we should be close to the market and adopt flexible and diverse methods, such as zero interest (one-time repayment of principal and interest), interest (annual dividend), discount, floating income and convertible bonds.