Performance bond is a kind of financial guarantee for buyers and sellers to ensure performance. Traders in the futures market must deposit a certain amount of performance bond when trading. The amount of bonds is set by the exchange that provides contract transactions, usually 5- 15% of the total contract value. Of course, brokers or entrusted brokers will also set an additional margin on their own, which will not be lower than the level set by the exchange. The performance bond emphasizes the protection of the interests of the tenderer or investors, which can be shared by the winning contractor and the third party, provided that the tenderer recognizes that the party is effective and the third party bears joint and several liabilities, so it is replaceable. The performance bond is independent and must be collected, stored, executed and returned by institutions recognized by both parties.