Preliminary clinical study of dexamethasone on prevention relapse of polyp and nodules of vocal cord in microlaryngoscopic surgery under suspension laryngoscope;

Clinical observation on microwave therapy for treatment of 25 patients with vocal cord leukoplakia under fiberoptic laryngoscope;

Comparative study of heat injury on vocal cord mucosa induced by different power semi conductor laser;

A virtual simulation system with haptic display for laryngoscopic vocal cords surgery was developed.

This paper makes an analysis and a discussion around the breath application,vocal cords and throat,the resonating application,the distinct and clear pronunciation,the mood to control,etc.

The function of the vocal cords is the foundation of singing,but the beam of voice-the two regulative function produced by the vocal cords and the tune of resonance has very important function in the mixed true voice and falsetto and in the throats voice.