Fixed investment is an investment method, that is, regular fixed purchase. Bond fund is a kind of fund. You can invest in bond funds. The fixed investment of the fund can effectively spread the investment risk. When the fund's net value rises, it will buy less fund shares. When the net value falls, you buy more stocks. In the long run, you can effectively reduce the investment cost, and you don't have to work hard to choose the right investment opportunity. The starting point of fixed investment is low, and 200 yuan will do. It does not increase the economic burden, and automatically deducts money every month, which has the effect of compulsory savings. It has accumulated funds for investors, and in the long run, it can also obtain compound interest income. The most important thing is that you don't need to choose a time point, you can average the buying price and avoid buying high and selling low forever. Choose funds to see the funds with stable long-term trend, high ranking, strong profitability and good returns. The risk of long-term fixed investment is almost zero and the income is high. Generally, it is best to choose the stock-based Huaxia hybrid fund with higher returns for long-term fixed investment funds, and the risks can be resolved in the long-term fixed investment. Bond funds are generally suitable for more conservative investors to buy at one time. It is not suitable for fixed investment, because the income is low and the fixed investment is of little significance. Fixed investment funds and bond funds are two different things.