2, the advance payment is a means of payment, its purpose is to solve the contract side of the working capital shortage. Advance payment does not have the role of guaranteeing the fulfillment of the debt, and can not prove the establishment of the contract. Receive advance payment party default, only to return the money received, without double return. In addition, the law on the use of advances have strict provisions, the parties shall not be set arbitrarily in the contractual exchange of advances, while the deposit is no such restriction.