布林线（Boll）指标是通过计算股价的“标准差”，再求股价的“信赖区间”。该指标在图形上画出三条线，其中上下两条线可以分别看成是股价的压力线和支撑线，而在两条线之间还有一条股价平均线，布林线指标的参数最好设为20。一般来说，股价会运行在压力线和支撑线所形成的通道中。-Bollinger Bands (Boll) indicators by calculating the price of the " standard deviation" , and then seek a " confidence interval"　of the stock price. This indicator draw three lines on the graph, which the upper and lower two lines can be seen as price pressure line and support line between the two lines, there is a price average, Bollinger Bands indicator parameters best set to 20. In general, the stock will run in the pressure line and support line formed channel.