Objective:To observe the resection range of dog hemi-vertical larynx by semiconductor laser.Methods: Twelve dogs were randomly divided into three groups (A,B and C,n=4).

• 目的:观察半导体激光烧灼犬垂直半喉的极限范围，为探讨临床喉癌激光部分垂直半喉切除术的切除范围提供参考。