The white line of MACD is called diff and the yellow line is dea. Their formula is: diff: EMA (close, short) -EMA (close, long); DEA : EMA(DIFF，M)； That is, diff is the short-term (default is 12) average of the closing price-the long-term (default is 26) average of the closing price; Dea is to average the difference. According to these two lines, we can use deviation and intersection to analyze the market. In addition, the columns in MACD are formed by expanding a certain multiple according to the difference between DIFF and dea.