An apparatus for relaxing a respiratory tract and a bronchial tube, comprising: a color light therapy device adapted to emit color light in a wavelength band of visible light for a predetermined duration with a predetermined emitting pattern, the light being emitted when an operation button installed on a front surface of the body is pushed and an operation of the color light therapy device is started; the color light being emitted through a color light emitting protrusion; said protrusion being formed protruding from a rear surface of a body of the color light therapy device and adapted to be accommodated in a recessed portion of the neck at which ends of left and right clavicles meet each other below the front of the neck for inducing muscle cells of the respiratory tract and the bronchial tube to secrete a material that relaxes the muscles; a pair of neck bends that extend from both side surfaces of the color light therapy device, adapted to elastically gird a perimeter of a user's neck, and having two ends at which pressing protrusions that press the rear of the user's neck while being fixed to the rear of the user's neck are located; characterised in that the color light therapy device further includes a vibration detection signal generator that is installed inside the body and, when an operation of the color light therapy device is finished and a vibration detector exposed from the rear surface of the body detects vibrations greater than a predetermined reference value, outputs a vibration detection signal to transmit the vibration detection signal to a controller of the color light therapy device so that the color light therapy device emits color light in a predetermined irradiation pattern. a color light therapy device adapted to emit color light in a wavelength band of visible light for a predetermined duration with a predetermined emitting pattern, the light being emitted when an operation button installed on a front surface of the body is pushed and an operation of the color light therapy device is started; the color light being emitted through a color light emitting protrusion; said protrusion being formed protruding from a rear surface of a body of the color light therapy device and adapted to be accommodated in a recessed portion of the neck at which ends of left and right clavicles meet each other below the front of the neck for inducing muscle cells of the respiratory tract and the bronchial tube to secrete a material that relaxes the muscles; a pair of neck bends that extend from both side surfaces of the color light therapy device, adapted to elastically gird a perimeter of a user's neck, and having two ends at which pressing protrusions that press the rear of the user's neck while being fixed to the rear of the user's neck are located; characterised in that the color light therapy device further includes a vibration detection signal generator that is installed inside the body and, when an operation of the color light therapy device is finished and a vibration detector exposed from the rear surface of the body detects vibrations greater than a predetermined reference value, outputs a vibration detection signal to transmit the vibration detection signal to a controller of the color light therapy device so that the color light therapy device emits color light in a predetermined irradiation pattern.