Fund conversion business means that investors can freely switch to other open-end funds managed by the fund management company after holding the open-end funds issued by the fund management company, and directly purchase the target funds without redeeming the existing funds first. Fund conversion business provides convenience for investors to cope with changes in the stock market, bond market and money market. In addition, by changing the business and changing the investment variety of the fund, compared with the normal redemption and re-subscription business, we can enjoy certain preferential rates. After the fund share is converted, the original holding time will continue to be calculated. The longer the holding time, the lower the redemption rate. Fund conversion can also shorten the time than selling old funds to buy new funds. Under normal circumstances, the application for fund conversion can be confirmed on the second trading day (i.e. T+ 1). It should be noted that one or several funds in the same fund company may not be able to convert with other funds due to reasons such as fund registration agencies. However, investors should not switch fund products frequently. Because the fund is a professional financial product, its performance has a certain periodicity. Investors cannot blindly switch fund products because the net value of the fund is lower than psychological expectations in a short period of time. This not only increases the conversion cost of the fund, but also may lose the profit opportunities that the original fund products should have.