Below are four stock selection principles for band operation: 1. Select stocks that are in a bullish position on the rising channel for operation, and do not select stocks that are in a bearish position on the falling channel on the low level for operation. Selecting stocks that are in a sideways position at the low level is safer, but the waiting time may be slightly longer. 2. During the period when the entire market is in a bearish trend, it is important to learn to temporarily stop trading in the market, wait for the market to stabilize, and then identify opportunities to operate. Investors can quickly engage in trading in the market, which usually presents great profit opportunities. 3. Do not choose short-term doubling or continuous limit up trading for band operations, as hotspots are prone to differentiation and may be easily trapped. 4. Have a stable mindset, believe in your stock selection logic and thinking, patiently strengthen your confidence before falling below your position, and do not feel envious or doubt yourself when seeing other sectors or individual stocks rise.