Fixed investment in funds is a strategy of investment funds, that is, regular quantitative purchase of funds, which is more suitable for novice investors and investors who have no time to make a market. Advantages of fixed investment: 1, saving time and worry, without staring at the market; 2. There is no need for timing or stop loss; 3. Compound interest calculation. Investors should seize the opportunity to enter the market when making fixed investment. Generally, they will make a fixed investment during the decline of the fund, and it is best to choose a fund with relatively large fluctuations. The fund is not a guaranteed product, and a fixed investment cannot guarantee a certain income.