Rolling trading theory is a brand-new trading theory that integrates the advantages of long-term trading technology, short-term trading technology, band trading technology and time-sharing trading technology. It advocates the trading strategy of combining long and short positions with both offensive and defensive. Its core idea is to hold positions at the bottom in the medium and long term, scientifically manage funds, rationally allocate positions, earn enough money to increase the market in large bands, and maximize the band income; At the same time, according to the law of handicap change and price movement, with short-term trading technology as an auxiliary means, relying on intraday rolling trading strategy, we can do a good job of selling high and sucking low, earn the difference and greatly reduce the cost of holding positions. Strive to achieve small-band, medium-band and large-band all-inclusive, and truly maximize the capital profit under the premise of stability.