First, the same points can be used in combination. According to the bollinger band combined with the golden section of K-line, the shape of K-line is analyzed. The shape of the bollinger band is as follows: when the bollinger band is horizontal, the K line runs upward from the lower rail and pierces the middle rail line, and gradually enters the upper rail line, which can be regarded as strong. In the bollinger Band, when the K-line penetrates the middle rail line from the upper rail line and enters the lower rail line, it can be considered as a weak point, and when the K-line runs on the middle rail line, it can be considered as a sideways position. Second, the difference (1) K line K line contains extremely rich information. As far as a single K-line is concerned, the entities of the upper shadow line and the negative line generally represent the downward pressure of the stock price, while the entities of the lower shadow line and the positive line represent the upward force of the stock price; The long entities of the upper shadow line and the negative line indicate that the stock price has a relatively strong downward momentum, while the long entities of the lower shadow line and the positive line indicate that the stock has a relatively strong upward momentum. If multiple K-lines are combined according to different rules, different K-line combinations will be formed. This K-line pattern contains more information. For example, there is a dark K-line combination in the rally, indicating that the rally may have been exhausted and investors should leave as soon as possible; In the downward trend, the K-line portfolio appears at dawn, indicating that the stock price may bottom out and rebound. Investors should seize the opportunity to open positions on dips. It can be seen that all kinds of K-line forms are constantly signaling people to buy and sell with the information they contain, which provides great help for investors to see the general trend and buy and sell stocks correctly, thus making it an extremely practical trading tool in the hands of investors. (2) Bollinger Band 1. Shrinkage: after several waves of decline, the futures price will often turn into a narrow range for a long time. At this time, the upper and lower limits of the bollinger band are extremely small, narrower and closer. Intraday trading shows that the difference between the highest and lowest futures prices is very small, so there is no room for short-term profit, and often even the handling fee is not earned. Intra-day trading is inactive and the volume is scarce. Investors should pay close attention to this shrinking situation, because a big market may be brewing. Once the trading volume increases, the futures price rises, the bollinger band opens wider and the rising market begins. If the bollinger band opening is extremely small at a high level, once the futures price breaks down, the bollinger band opening will be enlarged, and a round of decline is inevitable. 2. Opening: When the futures price rises from a low level to a high level after several waves, the openings of the top pressure line and the bottom support line of the Bollinger Band have reached a great extent, and the openings can no longer be enlarged and become constricted. At this time, it is a selling signal. Usually, the futures price is followed by a sharp drop or market adjustment. When the futures price falls sharply after several waves, the upper and lower openings of the bollinger band cannot be enlarged, the pressure line on the bollinger band shrinks from top to bottom in advance, and the support line on the bollinger band shrinks from bottom to top, a round of decline ends. Third, any indicator predicts the future trend through the analysis of the past trend, so each indicator has its shortcomings. If you can master the application of an index skillfully and sum up a set of suitable operation methods, it may be more beneficial to your stock trading. If you concentrate on pursuing more operation methods and want to master all the indicators, I think it is unrealistic and may have a negative impact on your operation. So, if you can master BOLL well, try to bring it to a better level to facilitate your own operation. If you are good at K-line, you can improve the success rate of your operation through various graphic analysis. Of course, it would be better if the two can be better combined.