In this paper, the main point is to review the matter of the confirmation of a real party in the deposit contract. To make a conclusion who a real party of the deposit contract should be is a matter of interpretation to the contract. But the beforehand qualities and customs of deposit contracts led the judges to see the one who gave money as a owner of deposit contracts. not the one whose name is written in bank deposit. According to the general theory on the interpretation of the contract. we firstly must decide along the consent between parties. therefore a name owner can be a real owner in the deposit contract following the real name of financial system, and then we have to see the judicial relation between parties through agency theory. In the end, if there is a clear or potential consent between money-giver and bank, the money-giver will be confirmed as a deposit owner.