The invention relates to a commercial multi-functional change exchange machine and an exchange method thereof. The change exchange machine comprises a main controller, an interactive touch screen (1), a monitoring pick-up head (2), a state display device (3), a paper money inlet slot (4), a coin inlet slot (5), a standby interface (6), a receipt printing device (7), a coin output slot (8), a paper money output slot (9), and a scanning device (10). The machine has the following beneficial effects: the machines can be applied to all corners of the city and thus exchanged money amount is increased; and the exchange ways contains network-bank-based ways like the alipay-based way and the wechat-payment-based way and the like, and the O2O type network management platform is introduced, so that usage of future product owners can be realized. The machine can be applied to all self-service supermarkets, shopping malls or leisure sites and the like; users can use the third-party payment accounts like the alipay accounts and wechat payment accounts to carry out payment; and thus the users can carry out no-hypostatic-money consumption or carry out account transferring during exchange.