1. bitter experience: futures investment can bring high returns, but it is also accompanied by high risks. Investors will feel extremely painful after experiencing continuous losses. In order to avoid this painful experience, some people will choose not to pay much attention to futures or even stop trading. This negative sentiment can easily lead investors to become numb to futures trading.

2. Psychological defense mechanism: In the face of continuous losses, some investors will start psychological defense mechanisms, such as denial, repression and projection. These defense mechanisms make investors feel numb in the face of losses.

3. Psychological adaptation: In psychology, people's psychology has certain adaptability. For futures investors, when faced with long-term losses, they will gradually adapt to this state, showing numbness to losses.

4. Trading fatigue: Futures trading involves high-frequency decision-making and operation. The long-term trading process will make investors feel tired, slow to respond to market changes, and show a state of numbness.