Abstract: A wearable laser pain relief device contains: a power supply unit, a start unit, a sensing unit, and a drive unit. The power supply unit includes at least one battery and a charging device. The start unit is configured to be pressed by a user to turn on/off and to wake up the wearable laser pain relief device. The sensing unit includes an infrared transmitter and an infrared sensor, and the sensing unit is electrically connected with the start unit. The drive unit is electrically connected with the sensing unit and is configured to receive command signal(s) from the start unit so as to transmit the infrared ray to user's muscle, nerve, and tendon from the sensing unit by ways of a laser head of the drive unit.