This paper discusses that the rights and interests of share holders of securities investment funds can be better protected by understanding fund information and diversifying investment. The rights and interests of investment fund share holders can be protected in many ways. Here are some suggestions: 1. Understand the fund information: fund share holders should carefully read the relevant documents of the fund, including the fund's investment portfolio, risk warning, management fees, etc. Knowing the fund information can help investors better evaluate the risks and benefits of the fund and make more informed decisions. 2. Diversification: Fund share holders can reduce risks by diversifying their investments. This means that investors can diversify their funds into multiple funds, or diversify various asset types such as stocks, bonds and money market instruments in the fund portfolio.

3. Choose a reputable fund management company: fund share holders should choose a reputable fund management company in order to protect their rights and interests more safely. The reputation of a fund management company can be measured by its scale, operating performance and operational risk control level. 4. Regularly adjust the investment portfolio: fund share holders should regularly adjust the investment portfolio to adapt to the market.