The reasons for today's decline in gold are: 1, the market's risk aversion to the situation in the Middle East has cooled; 2, the strong rise of the dollar suppresses gold; 3, the market has postponed the expectation of the Federal Reserve to raise interest rates. It is suggested that we should pay close attention to the follow-up developments of the situation in the Middle East: 1, if the situation in the Middle East relaxes, gold may face a further correction and decline; 2, if the situation in the Middle East continues to deteriorate, market risk aversion may push up the price of gold again.