Real-time Etf trading of etf funds is not suitable for fixed investment, because the fund cannot make fixed investment. If investors set a fixed investment, etf will buy frequently when the fund triggers the buying price, or it may not trigger the buying conditions, or it may not be able to buy. Therefore, from the characteristics of the fund, etf funds can not set a fixed investment.

At present, etf funds can't set fixed investment directly, but can set regular subscription condition table or fixed investment condition table. After setting, the system will automatically purchase funds according to the conditions. If investors want to invest in etf funds, they can consider investing in etf linked funds.