Electronic Trachea Intubation Training Model Features: 1.Oral and nasalcavityintubation . 2.Correctoperation,soundprompting,pulmonaryexpansion . 3.Wrongoperation,stomachexpansionorlaryngoscopecompressingtheteethwillactivatewarningprompting. 4.Examinationofpupilresponse:normalandmydriasis. 5.Thyrocricoid puncture position instruction .