Objective To compare the safety and feasibility of propofol combined with ketamine and lidocaine intravenous anesthesia with ketamine intravenous anesthesia in short pediatric operation.Methods Fifty children ASAⅠ~Ⅱ,aged 3-11,were randomly devided into two groups;the group of ketamine(K)(n=25) and the group of propofol combined with ketamine and lidocaine(C)(n=25).Anesthetic induction:Ketamine 2 mg·kg~(-1) was infused in group K and mixed liquor of propofol combined with ketamine and lidocaine(PKL) 0.2 mL·kg~(-1) in group C in one minutes.Anesthetic maintance:Ketamine was administerd by pumping at the rate of 2~4 mg/(kg·h)~(-1) in group K and PKL mixed liquor 0.2~0.4 mL/(kg·h)~(-1) in group C,and.Results There was a significant increase in MAP and HR in group K(P0.05),and there was no significant difference in group C(P0.05).There was no significant difference in SPO_2 between two group(P0.05).Conscious time was shorter in group C than group K(P0.05).Incidence of postoperative restlessness and nausea and vomiting was lower in group C tha group K(P0.05).Conclusion Compared with ketamine intravenous anesthesia,propofol combined ketamine and lidocaineintravenous anesthesia is more steady and faster to awake after operation and more suitable to short pediatric operation.