MACD indicator is a familiar analytical tool for most investors in the market. However, in specific applications, investors may feel that there are many gaps in the accuracy, effectiveness and operability of MACD indicators. Sometimes, they will find that judging the stock trend by using the analysis methods and skills of MACD indicators learned from books, the conclusions are often quite different from the actual trend, and even the opposite results are obtained. The main reason for this situation is that most books on technical analysis of the stock market are limited to the superficial level, and only introduce the general analysis principles and methods of MACD, but rarely introduce some specific connotations and analysis skills of MACD analysis indicators. On the basis of introducing the general judgment skills and analysis methods of MACD indicators, this section will elaborate the special judgment principles and functions of MACD in detail. The general criteria for judging MACD indicators are mainly around the fast and slow moving averages, red and green bars and their shapes. General analysis methods mainly include DIF and MACD values and their positions, the intersection of DIF and MACD, the contraction of red column and the shape of MACD graph.