Call recording method and device and mobile terminal

The invention is suitable for the technical field of communication, and provides a call recording method and device and a mobile terminal. The method comprises the following steps: after a call is put through, detecting call content; when a first preset keyword in the call content is detected, starting recording; and when a second preset keyword is detected in the call content, the call is ended, preset recording time is reached or a recording stop command from a user is received, stopping recording. According to the call recording method, the call content can be detected after the call is put through, and recording is started when the first preset keyword is detected in the call content, so that information relevant to the first keyword set by the user can be recorded in time in order to provide powerful evidence in case of dispute and conflict with a called party.