Mi band 7 does not support binding bank cards. Mi band 7 itself does not support binding bank cards, but the function of binding bank cards can be realized by connecting Xiaomi Payment App. Specifically, if your mi band 7 is bound to a Xiaomi account, you can choose to add a bracelet as a payment device in the Xiaomi Payment App. Then bind the bank card in Xiaomi Payment App, and you can complete payment, cash withdrawal and other operations through band 7.