1. Deposit means that the parties may agree that one party shall pay a deposit to the other party as security for the creditor's rights. After the debtor performs the debt, the deposit shall be used as the price or recovered. If the party paying the deposit fails to perform the agreed debt, it has no right to demand the return of the deposit; If the party receiving the deposit fails to perform the agreed debt, it shall return the deposit twice.

2. The down payment is a certain amount of money or substitute paid as a guarantee before the conclusion or performance of the contract.

3, advance payment is a means of payment, its purpose is to solve the shortage of liquidity of one party to the contract. Advance payment does not guarantee the performance of the debt, nor can it prove the establishment of the contract. If the party receiving the advance payment defaults, it only needs to return the money received, and it is not necessary to return it twice. In addition, the law has strict regulations on the use of advance payment, and the parties may not set any advance payment in the contract, but there is no such restriction on the advance payment.