Turning futures from small to large refers to a trading strategy of investors in futures trading, that is, from low-leverage contracts (small contracts) to high-leverage contracts (large contracts) to obtain greater returns. The specific meaning of futures from small to large is that in futures trading, investors hold a certain number of small contract positions and buy a corresponding number of large contract positions. In the market, the price of small contracts is relatively low and the leverage is small, while the price of large contracts is relatively high and the leverage is large. When the market develops in favor of investors, the price of small contracts will rise, and the price of large contracts will rise faster, so investors can get more benefits by changing from small to large.