Thirty six guinea pigs underwent resection of the right facial nerve in the Patotidfossa. For twelve of them;the semiconductor laser with 500 mW output POwer was used toanaStomose the facial nerve. We observed the lantency of evoked compound muscle actionPOtentials (CMAP) and morphology of the repaired facial nerve preoperatively in 4, 6 and 8 weeks postoperatively and compared with the other animalSI facial nerves which wereanaStomosed with conventional monofilament and multifilarnent suture. We found the laser-using method of anastomasis was better than that of anastomasis used with conventional multifilament but had neither beneficial nor detrimental effects than that of monofilament. It is concluded that using semiconductor laser to repair facial nerve may be efficient.