1. Break through the support level or resistance level and stop loss: in investment markets such as spot crude oil market or futures crude oil market, stop loss and take profit at the support level or pressure level, that is, buy and open positions at the support level, sell and transfer at the pressure level, stop loss below the support level after buying, and vice versa.

2. Stop loss by the amount of funds: that is, before each entry transaction, clearly plan how many points to lose as a stop loss. This is a good fund management method, but the premise is that traders should design their own profit-taking points and stop-loss points in combination with their own winning rates.

3. Stop loss with time: This method is mainly used for intra-day ultra-short trading mode. Intra-day ultra-short mode refers to the trading mode in which traders hold positions for as few as a few seconds and as many as a few minutes in order to obtain the price difference of several or dozens points in a certain period or part. For this model, the trading principle is to make use of the influence of the external market, the breakthrough of the support level and pressure level in the market, the false breakthrough and the sudden news to make a profit.