Early stage surgery of laryngeal cancer consists of removing only the diseased vocal cord part in the larynx and partial removal of the larynx on the vertical or horizontal axis. In these patients, speech functions are always preserved, although the amount of tissue removed during surgery deteriorates. In other words, even if the sound performance decreases, it is definitely protected. In addition, in patients who have the entire larynx removed in advanced stages, the larynx and vocal cords, which are the main vocal organs, are removed and opened to the neck of the trachea, and the patient's vocalization and speech are lost in natural and classical ways. It is possible to regain the speech ability to the patient, albeit with devices such as prostheses and electrolarynx.