The vocal folds are located in the middle of the throat and consist of the vocal ligament, the vocal fold muscle, and the laryngeal mucosa that covers its surface; the vocal folds are the main part of a person’s voice. Vocal cords are located in the middle of the throat, left and right symmetrical; the upper edge of the cone of elasticity free thickening, between the thyroid cartilage and the vocal cords protruding, known as the vocal ligament, the arytenoid muscle lower muscle bundles are located in the vocal folds, the vocal ligament on the outside of the vocal ligament, known as the vocal cords muscle, vocal ligament, vocal cords muscle, and the laryngeal mucosa covering the surface of the laryngeal mucosa constitute vocal cords together. The vocal cords are the main part of human voice; the central nervous system through the laryngeal nerve to make the vocal cords inward, the exhaled gas from the lungs to make the vocal cords vibrate to form the fundamental frequency, through the pharynx, the mouth, the nasal cavity of the resonance, as well as the tongue, the soft palate, the teeth, the lips of the sound-constituting organ movement, thus forming the sound and language. Vocal cords may suffer from vocal polyps and other diseases, hoarseness, loss of voice, etc. need to go to the hospital in a timely manner, clear cause of the disease and then follow the doctor’s instructions for treatment.