An interaction method in a call and a device, where the method includes displaying a voice assistant icon on a call screen of the wearable device when a phone number of a communication peer device is a service number converting received voice information into a dual tone multi frequency (DTMF) tone when the voice assistant icon is activated, and sending the DTMF tone to the communication peer device. Therefore, in a process of making or answering a service call using the wearable device, under a specific trigger condition, voice information of a user is converted into a DTMF tone to be sent to the communication peer device. In this way, when the user needs to enter a digit or a symbol in a call process, it can be ensured that the user enters correct information, and user experience is improved.