1. Trust fund, also known as investment fund, is a collective investment mode of "benefit sharing and risk sharing". It refers to a collective investment trust system in which the unequal funds of most investors who are uncertain in society are pooled through contracts or companies, and fund bonds are issued to form trust assets of a certain scale, which are handed over to professional investment institutions for diversified investment according to the principle of asset portfolio, and the profits obtained are shared by investors in proportion to their capital contribution and bear corresponding risks.

2. Broadly speaking, funds are the collective name of institutional investors, including trust and investment funds, unit trust funds, provident funds, insurance funds, retirement funds and funds of various foundations. Funds in the existing securities market, including closed-end funds and open-end funds, have the characteristics of income function and value-added potential. From the accounting point of view, funds refer to funds with specific purposes and uses. Because the investors of government agencies and institutions do not require investment returns and investment recovery, but require funds to be used for designated purposes in accordance with the law or the wishes of the investors, funds are formed.