Contract leverage trading is a high-risk, high-return investment method. Here are some strategies that are highly profitable but also high-risk: 1. **Multiple position strategy**: This strategy involves trading with high leverage, which can bring extremely high returns, but it also means extremely high risks. If the market moves in the opposite direction of expectations, the account may be liquidated in an instant. 2. **Band arbitrage**: This strategy involves arbitrage using price differences between two or more markets. Although this strategy can bring high returns, it can lead to huge losses if the price difference narrows rapidly. 3. **High-frequency trading**: This strategy involves using algorithmic programs to make rapid buy and sell transactions to take advantage of small price fluctuations. Although this strategy can bring high returns, it also requires a very high level of technology and a huge risk tolerance. 4. **Event-driven trading**: This strategy involves predicting and taking advantage of the impact of major events (such as economic data releases, company announcements, etc.) on the market. Although this strategy can bring high returns, the actual results of the event may be contrary to expectations, resulting in huge losses. 5. **Reverse Trading**: This strategy involves reverse trading, that is, when most people are long, you go short; when most people are short, you go long. Although this strategy can bring high returns, it also requires very high analytical skills and risk tolerance. Please note that the above strategies are all high-risk and may result in huge losses. Investors need to fully understand their risks and do a good job of risk management before using these strategies. In the meantime, here are some important risk management principles: * Set clear stop loss points * Use proper position management * Do not over-leverage * Keep the account balance at a reasonable level * Continuously learn and improve trading strategies Only through careful risk management and adherence to a disciplined trading strategy can you achieve long-term success in contract leverage trading.