The main positions of futures can be monitored. The monitoring method of futures main positions is to judge market sentiment and trend by monitoring the changes of long and short positions. Long positions continue to be greater than short positions, and the difference between them continues to expand, indicating that the main force is building positions. The main position is a relatively complicated process, which needs comprehensive analysis with various indicators. At the same time, investors should formulate corresponding investment strategies according to their own risk preferences, financial strength and other factors.