In the technical analysis method, the commonly used indicators are: bollinger band, moving average, MACD, BBI long and short indicators, KDJ, SAR stop loss point and so on. Among them, the Bollinger Band is a technical indicator based on statistical principles, which can help us to judge the fluctuation range and trend of the market. The moving average is the average price line calculated according to historical price data, which can help us to judge the market trend. MACD is a technical indicator based on the moving average, which can help us to judge the buying and selling signals in the market.