MACD, also known as the moving average of similarities and differences, is developed from the double exponential moving average. Subtract the fast exponential moving average (EMA12) from the slow exponential moving average (EMA26) to get the express DIF, and then use 2× (the 9-day weighted moving average DEA of the express DIF-DIF) to get the MACD column. The meaning of MACD is basically the same as that of double moving averages, that is, the dispersion and aggregation of fast and slow moving averages represent the current multi-empty state and possible stock price development trend, but it is easier to read. The change of MACD represents the change of market trend, and MACD of different K-line levels represents the trading trend of the current horizontal cycle.

1. In application, MACD should first calculate the fast moving average (usually 12 days) and the slow moving average (usually 26 days). These two values are used as the basis for measuring the "difference" between them (fast line and slow line). The so-called "DIF" is the 12-day moving average minus the 26-day moving average. Therefore, in the rising trend, the 12th EMA is higher than the 26th EMA. The positive deviation value (+DIF) will be larger and larger. On the contrary, in the downward trend, the deviation value may become negative (-DIF), and the absolute value will become larger and larger. For the market to reverse, the positive deviation or negative deviation should be reduced to a certain extent, which is indeed a signal of market reversal. The inverse signal of MACD is defined as the 9-day moving average (9-day DIF) of the "deviation value".

2. Due to the convenience of online stock trading, the rapid spread of information and the convenience brought by software analysis, more and more investors are inclined to technical analysis. Among the technical indicators, KDJ and MACD are widely used by investors. Most non-professional investors think that the KDJ index sends too many trading signals and the probability of making mistakes is high, so ordinary investors are often not suitable for this judgment index. Compared with KDJ, the use of MACD indicator is relatively simple and the error probability is small. Especially in judging the long-term trend, the MACD index of long-period K-line has higher accuracy.

3. It is found that the weekly K-line MACD index has high accuracy in judging the turning point in the medium and long term, and can be used as the first reference index for medium and long-term investors. For long-term investment, using this method to invest in the stock market is obviously stronger than holding index funds, which can achieve better asset appreciation and preservation. In order to share the practical research and judgment of weekly K-line MACD technical indicators, firstly, online stock analysis software had better use (12, 26, 9) parameters to analyze weekly K-line. When the MACD value exceeds 5 and the indicator appears red column, buy it at the opening of the second week, and sell it in the second week after the opening, and the indicator becomes green column.