It is suggested that the main reason for the fixed investment of the fund is that the risk of buying a fund by a single individual is high and the cost is fixed, and the logic behind buying a fund by a single individual is to judge that the stock market will rise in the short to medium term, otherwise it will not buy a fund with a sum of money. Judging the market itself is easy to make mistakes, and no one can predict the short-term trend of the stock market. Therefore, it is suggested that ordinary people invest in equity funds with funds, and the long-term profit is certain.