An automated finance transaction system, an automated finance transaction method and an automated teller machine (ATM) are provided. The system includes: an application server which receives a transaction request including a transaction details inputted by a user and the device number of an ATM from a financial institution application executed in a user terminal through a network; and the ATM which executes the financial institution application, transmits at least one sound wave signal including the device number, and performs a financial transaction according to the transaction request when the device number included in the transaction request received from the application server is a device number transmitted through the sound wave signal. It is possible to perform the financial transaction in conjunction with the ATM.;COPYRIGHT KIPO 2018
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