Gold ETF fund is a kind of financial derivative product based on gold and tracking the fluctuation of spot gold price, which can be traded in the securities market. Due to the high price of gold, gold ETFs usually take110 ounce as a fund unit, and the net asset value of each fund unit is the spot gold price110 ounce minus the accrued management fee. Its transaction price or secondary market price in the securities market is based on the net asset price per share. China Mainland is still in a "virgin land", and domestic investors know little about gold ETF funds, but gold ETF funds are extremely popular in overseas markets.