Stop loss is to control the loss within an acceptable range with systematic tools. For example, the current EUR/USD is 65,438+0.465,438+000/65,438+0.465,438+003, and we use 65,438+0.45438+003 to make multiple orders. If the price doesn't go up as I expected, you can set it when trading. On the other hand, if it falls to 1.4050, it will close the position. After this instruction is input, if the price really drops to 1.4050, the system will automatically close the position, which is the stop loss.