Abstract: Objective: To compare the application value of lightwand and direct laryngoscope in oral trachea cannula anesthesia of patients with missing or no tooth for finding an effective method.Methods: Sixty elderly patients with missing or no tooth were randomly divided into the lightwand group(group L ) and direct laryngoscope group(group M).The systolic blood pressure,diastolic blood pressure and heart rate of patients before anesthesia induction,before and trachea cannula and at 5 min after trachea cannula,the success rate of trachea cannula and the incidence of complication after trachea cannula between two groups were compared.Results: The success rates of intubation of two groups were 100%.The blood pressure and heart rate in group M at 5 min after trachea cannula were significantly higher than those in group L(P< 0.05 to P< 0.01).The differences of the tooth injury,postoperative sore throat and hoarseness between two groups after trachea cannula were not statistically significant(P >0.05).Conclusions: The oral trachea cannula guided by lightwand in elderly patients with missing or no tooth is simple,effective and less injury,which is worthy of popularization and applicat.