The invention discloses an
anesthesia induction method and device and an
anesthetic machine. The method comprises the following steps of receiving an induction command, and according to the inductioncommand, enabling a
machine to enter an induction process; after the induction command is received, executing an
oxygen supply and
denitrification stage, and rinsing
nitrogen in a loop and a breathingtube; after the
nitrogen is rinsed for a preset time, executing a
medicine induction stage, according to the current autonomous
respiration frequency of a patient, starting a controller for controlling ventilation, and according to the current
exhalation oxygen concentration and the current
oxygen inspired concentration of the patient, giving out trachea cannula reminding; and after the breathingtube is reconnected, executing a trachea cannula stage, according to the current ventilation data, the current
inhalation carbon dioxide concentration value and the current
exhalation carbon dioxideconcentration value, when the ventilation is determined to be valid, giving out intubating completion reminding, or else giving out anew intubating reminding. The
anesthesia induction method can effectively assist in anaesthetization doctors to complete an
anesthesia induction process, so that the working efficiency is improved, the anaesthetization safety and reliability are effectively improved,and anaesthetization is simple and convenient.