The invention provides a wearable apparatus and an audio-video recording method thereof. The wearable apparatus includes a sensing module, an audio-video (AV) module and a control module. The sensing module senses a physiological information of a user and an environment information of an environment where the user is located. The AV module captures a video and an audio around the user as an AV signal. The control module compares the physiological information and the environment information with at least one reference information. When at least one of the physiological information and the environment information matches one of the at least one reference information, the control module determines that an event occurs, and preserves and stores the AV signal within a period of time before and after a time point at which the event occurs.
