At present, the market fluctuates greatly, and the most suitable investment method is to choose a fixed investment fund, which has the following advantages: characteristics and advantages: 1, average cost, and risk diversification. It is difficult for ordinary investors to grasp the right investment opportunity in time, and they often buy at the high point of the market and sell at the low point of the market. However, the fixed investment mode of the fund is adopted. No matter how the market fluctuates, the fixed investment fund will be fixed for one day every month, and the bank will automatically deduct the money, and automatically calculate the number of fund shares that can be purchased according to the net value of the fund. In this way, investors buy funds on schedule, and the investment cost is relatively average.