ETF fund is an open-end fund with index as the investment target, and tracks the performance of the index by buying all the stocks in the target index. In the long run, ETF funds can usually bring returns, but whether they can make money depends on the performance of the market and the investment strategy of ETF funds.

First of all, the return of ETF funds is closely related to the performance of tracking index. If the selected index has a good performance, the value of ETF funds will usually rise accordingly. On the contrary, if the index does not perform well, the value of ETF funds may fall.

Secondly, investment in ETF funds also needs to consider the management cost and transaction cost of the fund. These expenses will directly reduce the income of investors, so they need to be carefully evaluated. In addition, ETF funds also have risks, including market risk, liquidity risk and operational risk.

Finally, investing in ETF funds needs to be evaluated according to individual investment objectives and risk tolerance. Different people have different investment preferences and risk tolerance, so they should choose according to their own situation.

To sum up, the long-term investment of ETF funds has certain potential to make money, but whether it can make money depends on the market trend, the selected index and the fund management fee. Investors should carefully evaluate and choose according to their own situation.