The rise of the US dollar and the fall of gold mean that the US dollar index rises and the gold index falls, and the US dollar index is negatively correlated with gold and silver in the general direction. The rise in the price of gold will affect the currency prices of some countries. There are many factors that affect the price of gold. Exchange rate fluctuations in one market can spread to other markets quickly, but each market has its own different characteristics.

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Gold trading time: Tokyo foreign exchange market is relatively single, mainly Japanese yen against the US dollar and Japanese yen against the euro. As a big exporter, Japan's import and export trade balance is relatively concentrated, and it is easily disturbed. Trading time is about 8: 00- 1 1: 00 and 12: 30- 16: 00 Beijing time. There are many kinds of currencies traded in the London foreign exchange market, often more than 30 kinds, of which the largest transaction volume is pound against dollar, followed by pound against euro, Swiss franc and Japanese yen. Its trading time is about 17: 00 Beijing time to 1: 00 the next day. Almost all major international banks have branches here. Because it is linked to the trading hours of new york foreign exchange market, the most active period is from 2 1: 00 to the next day 1: 00. New york's foreign exchange market is one of the important international foreign exchange markets, and its daily trading volume is second only to London. At present, more than 90% of US dollar transactions in the world are finally settled through the inter-bank clearing system in new york, so new york's foreign exchange market has become the international settlement center of US dollars.

In addition to the US dollar, the trading currencies of major currencies are euro, pound, Swiss franc, Canadian dollar and Japanese yen. Its trading time is about 2 1: 00 Beijing time to 4: 00 the next day. Market prices include spot and futures prices. These two prices are both related and different. These two prices are restricted and interfered by many factors, such as supply and demand, which change greatly and the price determination mechanism is very complicated. What is important is that spot prices and futures prices are affected by similar factors, so the direction and magnitude of changes are basically the same. However, due to the convergence of market trends, the basis of gold (that is, the difference between the spot price of gold and the futures price) will continue to decrease as the futures delivery date approaches. At the delivery date, the futures price and spot price of the transaction are roughly equal. Theoretically, the futures price should stably reflect the spot price plus the holding cost of a specific delivery period.