The methods of setting a stop-loss are roughly divided into three kinds, each of which must follow certain rules.
1. Setting a stop-loss for intra-day short-term entry: This range should be controlled within 50 pips, as the intra-day fluctuation of most currencies is only around 100 pips. The error we can accept is also within 50 pips. A larger error already indicates a problem with the judgment of the intra-day trend.