Method for judging central apnea through thoracic impedance change

The invention provides a method for judging central apnea through thoracic impedance change, which comprises the following steps of: detecting and analyzing thoracic impedance change data of a target object to obtain a thoracic impedance signal waveform of the target object, and performing detection time correlation calibration processing on the thoracic impedance signal waveform; the method comprises the following steps: detecting and analyzing mouth-nose airflow state data of a target object to obtain a mouth-nose breathing airflow signal waveform of the target object, and carrying out detection time correlation calibration processing on the mouth-nose breathing airflow signal waveform to provide a reliable basis for judging the apnea state and type of the target object; and based on the chest impedance signal waveform and the mouth-nose breathing airflow signal waveform, identifying a chest impedance signal abnormal event of the target object or an occurrence time period corresponding to the mouth-nose bre