Much has been tried to avoid the toxicity and increase the quality of local anesthesia during epidural anesthesia. One idea is that a mixture of local anesthetics would give better result than separate in jections. This study was undertaken to compare the use of lidocaine alone in contrast to a lidoca-ine-tetracaine mixture. Thirty three cases of epidural anesthesia were performed at Dae-Jeon Eul Ji Hospital from Jan. to Nov. 1985. The results were as follow; 1) There was no difference in the time of onset of anesthesia between the single k Mixt-ure groups. 2) The duration of anesthesia from the mixture was longer than lidocaine by itself. 3) Muscle relaxation from the mixture was superior to lidocaine alone. 4) Toxicity of the mixture was no more than lidocaine alone. 5) In all the groups, pressure drop in diastole was more than that of systole. The heart rate was normal or slightly increased. In conclusion, the use of the lidocaine-tetracaine mixture was better than lidocaine alone for epidural anesthesia.