Signs of the end of voice change in boys are usually characterized by a larger laryngeal cavity, wider and thicker vocal cords, and a stagnation of pitch change. Everyone needs to go through the period of voice change, after the period of voice change most of the vocal cords will appear obvious changes, especially the end of the period of voice change in boys there will be certain changes, boys in the end of the period of voice change laryngeal cavity will be significantly larger, the vocal folds will be significantly wider and thicker, the voice from the tender voice of the children completely into the voice of the adults, the tone has become more low and rough, which is often on behalf of the end of the period of voice change. Whether you are a boy or a girl, you need to pay attention to protect your voice during the period of voice change, to use your voice correctly and not excessive shouting or uncontrolled loud noise.