[Object of the Invention] An object of the present invention is to provide a breathing apparatus comprising a face piece for covering the whole face or part of the face, an inhale valve and an exhale valve provided on the face piece, a motor fan for supplying external air into the face piece through the inhale valve, a filter for cleaning the external air sucked into the motor fan, a breath monitoring apparatus, and a controller for controlling the operation of the motor fan synchronously with the breath based on the detection signal from the breath monitoring apparatus, wherein deterioration with age of the accuracy of the breath monitoring occurs less readily than in the breathing apparatus of the prior art. [Disclosure of the Invention] A breathing apparatus comprises a face piece for covering the whole face or part of the face, an inhale valve and an exhale valve provided on the face piece, a motor fan for supplying external air into the face piece through the inhale valve, a filter for cleaning the external air sucked into the motor fan, a breath monitoring apparatus provided on the face piece and not comprising the inhale valve and the exhale valve, and a controller for controlling the operation of the motor fan synchronously with the breath based on the detection signal from the breath monitoring apparatus.
