The momentum of the market is measured by continuously calculating the price at a fixed time interval. Momentum measures the speed of price change, not the actual price itself. Momentum index is momentum, which is not very commonly used now. The use method is that it draws up an upper and lower boundary and sends a trading signal when crossing the 0 line. Theoretically, the momentum line is faster than the price. But it is difficult to grasp the trend in practical application. When trading, trends take precedence over indicators, and indicators are only secondary factors. I suggest you pay attention to the shock index, which is more helpful. Such as ROC CCI and RSI. RSI is the most recommended, which has limited disadvantages for overall judgment. I hope it helps you.