1, when the stock price rises across the bollinger band, the probability of file inversion is high;

2. When the stock price falls below the bollinger band, the rebound probability is high;

3. When the vibration band of Bollinger Band narrows, it shows that the change of disk surface is imminent;

4.BOLL must be used with BB and WIDTH;

5. If the switch parameter is set to 1, the chart is represented by four lines.

BBIBOLL is the orbit line with BBI Bohr as the center line, and the standard deviation of BBI Bohr is the bandwidth. UPR line is the pressure line, which can suppress the stock price, DWN line is the support line, which can support the stock price, and BBIBOLL line is the central axis.

Apply rules:

1 is the superposition of long and short index (BBI) and boll.

2. When the closing price of the high-priced area falls below the BBI line and the upper and lower rails are far apart, this is a selling signal.

3. When the closing price of the low-priced area breaks through the BBI line and the upper and lower rails are very close, it is a buy signal.

4. The BBI line is up, the stock price is above the BBI line, and the bulls are powerful.

5. The BBI line fell, the stock price was lower than the BBI line, and the short position was strong.