A terminal receives an input operation of adding a new device to a target account by a user. The terminal obtains device information of a to-be-added first device in response to the input operation, where the device information includes a MAC address of the first device. The terminal establishes a P2P connection to the first device based on the device information. After the terminal successfully establishes the P2P connection to the first device, the terminal displays the first device as an online device of the target account. The terminal receives a control operation entered by the user on the first device. The terminal sends a control instruction to the first device through the P2P connection in response to the control operation.