Abstract: Objective: To seek an advantageous anesthetic time for taxis of palate.Methods: One hundred and eighty patients with lateral complete cleft palate were randomly divided into 3 groups according to their ages:patients in group A were 1-2 years old,group B were 2-3 years old and group C were 4-7 years old.SpO₂ during anesthesia and the anesthetic complications were observed.Results: SpO₂ was significantly higher in group B and C than in group A(P<0.01).Complications such as laryngospasm,tracheospasm and glossocoma were significantly fewer in group B and C than in group A(P<0.05),while the differences between group B and group C were not significant(P>0.05).Conclusions: The advantageous anesthetic time for cleft palate taxis is during 2-3 years of age.