The characteristics of China's futures position limit and large declaration system are as follows: ① The exchange determines the monthly position limit and large declaration standard of each variety according to the specific situation. (2) When the speculative position reaches more than 80% of the position limit, members or customers shall report the funds and positions to the Exchange. (3) The applicable position limit and position declaration standard are different for different total positions in the market. ④ In different periods of the trading process, different positions are determined according to the contract. ⑤ Different standards are applied to members of futures companies, members of non-futures companies and general customers.