As we know, smart contracts are passively triggered to execute, while executing the uplink operation is required to pay a certain cost. In the business of crowdpooling, when the crowdfunding period ends, a transaction needs to be triggered to change the state of the crowdfunding pool contract and create a public pool, which requires initiating a transaction to move the business process backward in the first place. Therefore we introduce a pre-deposited settlement fee to cover the cost of this transaction.