To provide a automatic cash transaction machine by which a customer having plural accounts at plural financial institutions can add an account at any time where the wants to transact during transaction operation, can select all the accounts or an arbitrary account and can simultaneously perform transactions such as depositing, withdrawing, fund transferring or paying after confirming an account balance of the transaction account or the like.

At a control part for controlling a whole device of a cash automatic transaction machine, an account addition key 81 which can add a transaction account at any time is displayed on a transaction operation screen and plural transaction accounts are enabled to be dealt with when a customer wants simultaneous transaction of plural transaction accounts, an arbitrary transaction account is selected from plural transaction account taken in by the account addition key 81 or, with all the transaction accounts, transactions such as depositing, withdrawing, fund transfer or paying are simultaneously processed.