If your trading software sends the stop-loss and profit-taking instructions to the futures company server, it will naturally be effective for a long time; If the instruction is executed by the local computer, the stop loss will not be executed when the trading software is closed; As for whether the stop-loss order of trading software will be executed on the server or on the local computer, there are differences among futures companies. Take Guo Xin Futures as an example, the transaction with Kingstar is executed on the server. Guo Xin futures