Changes in trading volume and positions will affect futures prices, and changes in futures prices will also cause changes in trading volume and positions. Therefore, analyzing the changes of the three is conducive to correctly predicting the trend of futures prices. 1, the volume of transactions and positions increased, and prices rose, indicating that new buyers are buying in large quantities, and domestic prices may continue to rise. 2. The volume of transactions and positions decreased, and the price rose, indicating that a large number of short positions were closed, and the price went up in the short term, but it may fall back soon. 3. With the increase of trading volume, the price rises, but the position decreases, indicating that both short sellers and short sellers are closing their positions in large quantities, and the price will fall immediately. 4. The increase in trading volume and positions and the decrease in prices indicate that short sellers sell contracts in large quantities, and prices may fall in the short term, but if they sell excessively, prices may rise. 5. The volume and position decreased, and the price fell, indicating that a large number of short sellers are eager to sell their positions, and the price will continue to fall in the short term. 6. The increase of trading volume, the decrease of positions and the decrease of prices indicate that when short sellers use short sellers to close positions, they will make profits by closing positions one after another, and prices may turn to rebound. As can be seen from the above analysis, under normal circumstances, if the volume and position are in the same direction as the price, the price trend can last for a period of time; If the two are opposite to the price, the price trend may turn. Of course, this needs to be further analyzed in combination with different price patterns.