Civil aviation passenger state monitoring method and early warning system

The invention relates to the technical field of aviation monitoring, and provides a civil aviation passenger state monitoring method and an early warning system. When an aircraft cabin is in a cabin door opening state, a cabin door closing state and a cabin internal environment closed adjusting state, environment data in the aircraft cabin and physiological data of passengers are collected; the method comprises the following steps: generating physiological state and cabin environment initial association information and physiological state and cabin environment real-time association information of a passenger, and correcting the physiological state and cabin environment real-time association information by using the physiological state and cabin environment initial association information to obtain effective physiological state data; physiological state data are corrected from cabin environment change and passenger body state, and the credibility of the physiological state data is improved; the face state info