The golden section is an ancient mathematical method. Its various magical functions and magical powers have repeatedly played an unexpected role in practice. In practice, it is also widely used in "optimization method". In technical analysis, there is also an important analysis method-wave theory-which makes use of the content of the golden section. Here, we only explain how to get the golden section line and carry out the actual operation of the next sale according to its guidance. Among these figures, 0.382, 0.6 18, 1.382, 1.6 18 are the most important, and the price is likely to generate support and pressure at the golden section generated by these four figures. Step two, find a point. This point is the highest point at the end of the rising market, or the lowest point at the end of the falling market. Of course, we know that high and low here refer to a certain range and are local. As long as it can be confirmed that a trend (whether rising or falling) has ended or temporarily ended, the turning point of this trend can be used as the starting point of the golden section. Once this point is selected, we can draw the golden section. In the technical analysis of the market, the golden section line and percentage line are commonly used analytical tools, and their main functions are to give the support level or pressure level of the stock index or individual stock in advance by using the golden section line and percentage rate, so as to prepare for the operation in advance near the possible target position. The analysis principle of the golden section line and the percentage line is basically similar, the only difference is that the cited ratio is different, but when analyzing the same market or stock, the positions of the key points revealed are basically the same, which can be used interchangeably in practical applications. The golden section line uses the golden section ratio principle to analyze the market, and gives the corresponding tangent position accordingly. The golden section principle is derived from Fibonacci sequence. The well-known golden ratio of 0.6 18 is the ratio of two adjacent values in Fibonacci series, and based on this, more important ratios such as 0. 19 1, 0.382 and 0.809 are calculated. Among them, the most commonly used ratios in the golden section are 0.382 and 0.6 18. Applying this to the analysis of the stock market, it can be understood that the positions corresponding to the above ratios are generally prone to strong support and pressure. After the end of the intermediate market, the trend of stock index or stock price will move in the opposite direction. At this time, no matter from the downward trend to the upward trend or from the upward trend to the downward trend, the fluctuation between important high and low points in the latest trend market can be taken as the analysis range, and the original fluctuation can be 0. 19 1, 0.382, 0.50, 0.6 18.