Boys’ voice change occurs after puberty, around 13 to 16 years old, and is closely related to the development of the body. After puberty, under the stimulation of various hormone levels in the body, the height of the boy begins to grow significantly, under the stimulation of androgen levels, the laryngeal nodes begin to develop, and the laryngeal cavity is enlarged, the vocal cords become longer, wider and thicker, so that the phenomenon of voice change occurs, and the time of occurrence of the corresponding situation varies from individual to individual, and most of the time occurs between the ages of 13 and 16 years old. Boys should pay attention to avoid excessive use of the voice during the period of voice change, to prevent edema and inflammation of the vocal cords, resulting in abnormal voice conditions, once abnormal vocal conditions occur, it is necessary to consult a doctor in a timely manner, under the guidance of the clinician to carry out care.