The invention discloses an operation method for an internet cash interaction service device. The method comprises a depositing operation method and a withdrawing operation method; a user clicks a depositing or withdrawing function on a service main interface, and the internet cash interaction service device generates a depositing or withdrawing identification code and performs display on the service main interface; and the user uses an intelligent device to scan the depositing or withdrawing identification code through a ''scanning'' function of an app of a third-party account payment platform, and the internet cash interaction service device displays running state information on the service main interface and guides the user to finish handling of a depositing or withdrawing business. Thedepositing and withdrawing operations can be performed for the third-party account payment platform, and the operation method is simple; and double verification is performed by adopting a depositing verification code (or a withdrawing verification code) and a payment password of the third-party account payment platform, so that the security of user operation can be further protected and the loss caused by information leakage is prevented.