This invention relates to a negative pressure type respiratory muscle training system comprising a negative pressure generation unit for generating a negative pressure airstream and imposing the negative pressure airstream to a human body respiratory tract with a sealing member and a feedback circuit for generating a control signal according to human body respiration state and a reference signal and transmitting the control signal to the negative pressure generation unit to control the negative pressure generation unit stopping imposing the negative pressure airstream to the human body respiratory tract. As such, by imposing the negative pressure airstream to the human body respiratory tract, this invention can train the human body respiratory muscle in addition, by using the feedback circuit to measure the respiration state of human body, it can stop imposing the negative pressure airstream to the human body according to the respiration state so as to prevent human body from danger during the training process.本發明有關一種負壓式呼吸肌訓練系統,其包含:一負壓產生單元,用以產生一負壓氣流,並經由密封件而將負壓氣流施加至人體之呼吸道;以及一回授電路,依據人體之呼吸狀態與一參考訊號,產生一控制訊號,且傳送控制訊號至負壓產生單元,以控制負壓產生單元停止施加負壓氣流至人體之呼吸道。如此,本發明藉由將負壓氣流施加至人體之呼吸道,以訓練人體之呼吸肌,且藉由回授電路量測人體之呼吸狀態,以依據呼吸狀態而停止施加負壓氣流至人體,以避免人體在訓練過程中發生危險。10‧‧‧呼吸肌訓練系統101‧‧‧負壓產生單元102‧‧‧回授電路103‧‧‧呼吸量測模組104‧‧‧運算單元105‧‧‧氣流量測單元106‧‧‧肌肉量測單元30‧‧‧人體REF‧‧‧參考訊號CON‧‧‧控制訊號NP‧‧‧負壓氣流FB1‧‧‧氣流回授訊號FB2‧‧‧肌肉回授訊號
