Objective:To compare the Application of the trapezius squeeze and jaw thrust in laryngeal mask airway (LMA) in-sertion in children under sevoflurane anesthesia .Methods:A total of 80 children aged 4 to 10 ,American Society of Anesthesiol-ogists(ASA) I-II and undergoing minor operation such as indirect hernia repair and orchiopexy were enrolled and randomly de-vived into trapezius squeezing group(Group T ,n= 40) and jaw thrusting group (Group J ,n= 40) .Anesthisia was induced with 6 L/min oxygen and 8% sevoflurane .When the chileren’s eyelash reflex lose ,jaw thrust/trapezius squeeze was applied every 10 s .The LMA was inserted immediately after the response of childern to trapezius squeeze or jaw thrust disppeared .The successful rates of LMA insertion ,LAM insertion time ,and blood pressure(BP) and heart rate(HR) before and after LMA in-sertion ,end-tidal sevoflurane concentrations (ETsev) ,minimum alveolar concentrations (MAC) in two groups were Recorded and compared .Results:The successful rate of the LMA insertion in Group T (95% ,38/40) was significantly higher than that in the Group J (75% ,30/40) ,there was statistical difference(P= 0 .013);The LMA insertion time in Group T was longer than that in Group J (P=0 .000);the untoward effects in Group T were less than those in Group J ;The BP ,HR ,ETsev ,MAC in two groups had not statistical differences .Conclusions :The trapezius squeeze is more sutable than jaw thrust for assessment of anaesthetic depth in LM A insertion in chilren under sevoflurane anesthesia .