Using credit cards to increase investment leverage is a high-risk behavior that may cause a serious financial crisis and is not recommended. Credit cards are mainly used for daily consumption, and they are not designed to be used for investment leverage operations. The following are some so-called “operation methods” that may be risky and irregular, but don't try them easily.： 1. **False consumption cashing out**: Through fictitious transactions, POS machines and other means are used to obtain credit card credits for investment. This not only violates the regulations on the use of credit cards, but may lead to credit cards being frozen or downgraded, and may also face legal risks, such as suspected credit card fraud. 2. **Raising cards by card**: Multiple credit cards circulate cash repayments to maintain the flow of funds for investment, but this method can easily form a debt black hole. Once the capital chain is broken, it will fall into the dilemma of being unable to repay high arrears. Investment should be based on reasonable capital planning, risk tolerance and professional investment knowledge, relying on formal, legal and robust channels and methods, rather than relying on dangerous methods such as credit cards. Please be sure to treat it with caution to avoid irreparable economic losses caused by incorrect operations.