The delivery contract has a delivery date and needs to be delivered on the specified date. At present, there are weekly delivery and quarterly delivery. , will be forced to deliver at maturity. If you don't want to be forced to deliver, you need to close your position before delivery, and you can't trade during delivery.

The biggest feature of perpetual contract is that there is no delivery date, and users can hold positions indefinitely or trade anytime and anywhere. There is a flexible leverage ratio to choose from, and the price is close to the spot, which will not manipulate the market.

Generally speaking, it is better to choose a permanent contract.