The invention relates to a system and a method for air depositing and withdrawing in the air of a bank. The system for air depositing and withdrawing of the bank comprises a mobile terminal, a communication operator website operating terminal, a business access platform and a banking business platform, and further comprises a center business platform. The center business platform comprises a logical processing service module, a short message service module, a data processing service module, a statistics service module, a log service module and an external interface service module. The logical processing service module comprises a website registering module, a card holder registering module, a withdrawing transaction processing module, a deposit transaction module, a website logout module and a card holder logout module. The system and the method for air depositing and withdrawing of the bank logically connects the banking business platform with the communication operator website operating terminal, logically connects the business access platform with the banking business platform, carries out physical isolation on the banking business platform and the business access platform, solves the connecting and communication problem between heterogeneous systems, solves the safety problem after different business systems are connected, and solves the problems such as data security, account security and payment security of an integrated business system formed by different business systems.