The invention relates to a breath detection device.Including a set of teeth,A joint seat,A detection unit,It can be placed in the oral position.The front part is provided with a first joint part；And the joint seat is arranged in front of the braces.A second joint part which can be joined with the first joint part；The detection unit has a circuit board.A microphone,A microprocessor circuit,I. transmission circuit,Number indicator light,The circuit board is arranged on the junction seat；And the microprocessor circuit,Transmission circuit,The microphone is set on the circuit board.The micro processing circuit can receive microphone input information；And the transmission circuit is electrically connected with the microprocessor circuit.It can also transmit data with external devices.And the indicator lamp is electrically connected with the microprocessor circuit；The invention can accurately detect and immediately know the efficacy of respiratory frequency.本發明係一種呼吸偵測裝置，包括一牙套、一接合座、一偵測單元，該牙套可置於口腔位置，前方一具第一接合部；又該接合座設於牙套前方，具一可與第一接合部接合之第二接合部；又該偵測單元具一電路板、一麥克風、一微處理電路、一傳輸電路、數指示燈，其中該電路板設於接合座上；又該微處理電路、傳輸電路、麥克風設於電路板上，該微處理電路可接收麥克風輸入訊息；又該傳輸電路與微處理電路電性連接，並可與外部裝置資料傳輸，又該指示燈與微處理電路電性連接；藉此本發明可準確偵測及即時得知呼吸頻率功效。
