The invention discloses a laryngeal surgical instrument which comprises a laryngoscope handle and a throat cannula. The laryngeal surgical instrument is characterized in that the throat cannula is round or oval, a scissors forceps insertion channel and a detection head are arranged in the throat cannula, and a flexible opening is formed in the side wall of the scissors forceps insertion channel in the axial direction to facilitate diameter reduction of a laryngoscope. The laryngoscope can be conveniently and rapidly inserted into the trachea of a patient, contusion of the tracheal wall in the laryngoscope inserting process is reduced, and meanwhile a visual operative field is further remarkably widened. After the laryngoscope is inserted into a designated position, a pair of arc-shaped scissors forceps is movably inserted into the scissors forceps insertion channel for lesion tissue shear. Due to the fact that structure is adopted, the laryngeal surgical instrument has the advantages of being novel in structure, convenient to operate, short inn operation time, few in postoperative complications, small in patient's suffering, high in surgical operation accuracy and the like.