Income-stable securities investment fund is a collective securities investment model with income * * * and risk * * *, that is, investors' funds are concentrated by the issuing fund unit, managed by the fund custodian, managed and used by the fund manager, and invested in financial instruments such as stocks and bonds. Securities investment funds have the characteristics of collective investment, professional management, portfolio investment, risk dispersion, benefit sharing and risk taking, and have comparative advantages such as safety and liquidity. It is a popular modern trust and investment tool, and does not contain features unrelated to the securities market. Securities investment fund refers to an investment tool that forms an independent fund property by selling the funds raised by fund shares, which is managed by the fund manager and the fund custodian, and makes securities investment in the form of portfolio, and the fund share holders enjoy the benefits and bear the risks according to their shares.