Fuente: Wipo "IOT" The present invention discloses a payment method of an IoT (Internet of Things) device, an IoT device, an IoT server end, and an intelligent terminal. The payment method includes the following steps that: the IoT server end receives a data object sent by a transaction server end and determines the device ID of the IoT device according to account information which is used for a user to login the transaction server end sent by the transaction server end; the IoT device receives the data object sent by the IoT server end according to the device ID; after receiving an acquisition request for the data object, the IoT device detects an input device for inputting identity authentication information; after detecting the input device, the IoT device acquires authentication information inputted on the input device; after the authentication information is authenticated successfully, the data object is sent to the IoT server end; and the IoT server end initiates a payment request to a payment server end for payment through account information for the user to login the payment server end.